Vectorwise: Beyond Column Stores

textabstractThis paper tells the story of Vectorwise, a high-performance analytical database system, from multiple perspectives: its history from academic project to commercial product, the evolution of its technical architecture, customer reactions to the product and its future research and development roadmap. One take-away from this story is that the novelty in Vectorwise is much more than just column-storage: it boasts many query processing innovations in its vectorized execution model, and an adaptive mixed row/column data storage model with indexing support tailored to analytical workloads. Another one is that there is a long road from research prototype to commercial product, though database research continues to achieve a strong innovative influence on product development

Dagstuhl Annual Report January - December 2011

The International Conference and Research Center for Computer Science is a non-profit organization. Its objective is to promote world-class research in computer science and to host research seminars which enable new ideas to be showcased, problems to be discussed and the course to be set for future development in this field. The work being done to run this informatics center is documented in this report for the business year 2011

Self-Evaluation Applied Mathematics 2003-2008 University of Twente

This report contains the self-study for the research assessment of the Department of Applied Mathematics (AM) of the Faculty of Electrical Engineering, Mathematics and Computer Science (EEMCS) at the University of Twente (UT). The report provides the information for the Research Assessment Committee for Applied Mathematics, dealing with mathematical sciences at the three universities of technology in the Netherlands. It describes the state of affairs pertaining to the period 1 January 2003 to 31 December 2008

Networks in Entrepreneurship

The value of networks as integral part of the explanation of entrepreneurial success is widely acknowledged. However, the network perspective lacks specification of the various dimensions of a network and their impact on the early development of a venture. We make a distinction between a Schumpeterian start-up pursuing a radical innovation and a Kirznerian venture on basis of an incremental innovation. This distinction is introduced as a contingency in the way networks contribute to the ability of the entrepreneur to discover opportunities, to get resources, and to gain legitimacy. In this explorative study three cases on high technology firms in The Netherlands provide empirical material to develop a number of propositions on the network effect on the survival or performance of start-ups.networks;discovering opportunities;entrepreneurial processes;high-tech entrepreneurship;start-up firms

WP 49 - The distribution of responsibility for social security in the Netherlands

High levels of unemployment, or high levels of social expenditures as well as the growing demand for a flexible labour force have given new impetus to the world-wide discussion on what model to use for an efficiently operating labour market and in particular on the role of institutions. Although there seems to be a growing consensus on the restricted governmental role in recent decades, this has not been translated into a unanimous appraisal of the role of intermediary organisations, such as trade unions. There is no clear view on an appropriate distribution of responsibility between government, social partners and the market. The research project ‘distribution of responsibility for social security’ aims to create a scientific basis for a clear and consistent view on the role and distribution of responsibilities between the different labour market institutions. As part of this research project, this paper provides an elaborate country study of the Netherlands, on the organisation of unemployment insurance, employment protection and active labour market and the performance of the labour market with respect to these fields. Both first-order effects (e.g. coverage rates, expenditures, replacement rates) and second-order effects (e.g. flows in and out of unemployment insurance) are analysed in this paper. It is shown that national legislation for social insurance is set by the national government. The intermediary organisations, among which are the trade unions, mainly have an advisory role with respect to national legislation. The advice, however is not binding. Yet, national law leaves some room for sector level legislation, in collective labour agreements. Here, the trade unions do play an important role and it depends on their collective bargaining power what kind of provisions are established in collective labour agreements. The administration of social insurance is also left to public institutions. In the past decades, the role of the trade unions has been reduced drastically in this field. On the market for reintegration of the unemployed, some competition is introduced with the outsourcing of activities to private reintegration companies. As for the performance of the Dutch labour market, this is characterised by relatively high levels of employment, job security, income security during unemployment spells and growing activation policies.

06472 Abstracts Collection - XQuery Implementation Paradigms

From 19.11.2006 to 22.11.2006, the Dagstuhl Seminar 06472 ``XQuery Implementation Paradigms'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available

Asabiyya: Re-Interpreting Value Change in Globalized Societies

This article reflects the renewed interest of economics and the social science discipline in value systems and religion. The World Values Survey provided a data framework of global value change, whose quantitative results led Barro (2004) to analyze the connections between some dimensions of recent sociological religious value research with economic growth. The present essay starts from this methodological position, and links value systems with economic performance in a much wider and macrosociological framework. We further develop the well-known Inglehart and Welzel (2003) map of global values, and develop the idea of "Asabiyya" ("social cohesion"), as a counter-model to both Barro and Inglehart and Welzel approaches. A frequently asked question is whether “modernization” without "spiritual values" in a globalized world economy and world society possible in the long run? Starting from principal component analysis, it is shown that rather two factors are decisive in understanding global value change: a continuum of "traditional versus secular", and a continuum "cheating versus active society". Asabiyya in the 21st Century, as a way out from the modernization trap of societies, characterized by large-scale social anomaly, is a high secularism combined with a high active society score, thus avoiding the "modernization trap". We show that economic growth in the current world crisis is far more connected with these dimensions. We conclude that not a society based on fear is needed in the first place, but an active society of volunteer social work.index numbers and aggregation, international political economy, religion, bureaucracy, corruption