5,961 research outputs found

    Webscience, 'social machines' and principles for redesigning theories of agency: a prolegomenon

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    This paper argues that the advent of the WWW and the principles now developing for the move ‘social machines’ has posed serious challenges to traditional social theory. In particular, it is argued that the concept of social machines and the forms of distributed agency they imply amplify ‘deep flaws’ in the underlying principles of current agency theories that make empirical work using such frameworks ‘undecidable’. The occasioning of social machines and the WWW here are examined for the ways in which the traditional models of agency, involving reflexivity/skill dynamics, can be dismantled and new principles for re-designed agency theory posed. One key problem and three re-design principles are identified

    Towards a social ontology of market systems

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    Academic analyses of market systems are deeply divided. While economists tend to neglect the personal and sociological factors that shape the behaviour of market actors, sociologists tend to discount the possibility of a systematic analysis of the consequences of market interactions. Economists thus end up with unrealistic models of markets, and sociologists end up unable to explain the economic impact of markets. This paper outlines a project that aims to produce an analysis of markets that is both sociologically realistic and capable of explaining economic effects. The project will construct a realistic ontological analysis of market systems, developed using a critical realist methodology. Market systems, it will argue, are social structures that depend ontologically upon both human individuals and a number of normative institutions. These institutions tend to produce coordinated interactions between market actors, and these interactions underpin mechanisms that endow market systems with emergent causal powers. Different types of interactions underpin different market mechanisms, including mechanisms like those theorised by mainstream economists, but also others that they tend to neglect, and an adequate understanding of real-world markets depends on analysing these multiple mechanisms and how they interact. This will be a theoretical project in economic sociology, drawing on existing empirical work without conducting new empirical research. It will be focussed primarily on contemporary product markets in advanced capitalist economies, while selected historical and alternative contemporary models will be considered more briefly to illustrate both the historical specificity of the dominant contemporary model and the possibility of alternative types of market system

    Turning ideas into money. Which ideas and whom money?

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    Romania plays no part in the world technological race. In the last three decades, we have lost the technological leadership role in the oil industry, simply because the communist regime was reluctant to encourage the growth of information technology in general, and personal computers in particular. Sadly, we failed to close the technological gap in the post-communist era. Only one in five Romanian companies currently introduces a new product, service, technology, etc., or brings about innovative business practices. This rate represents half of the European average. We are lagging one decade behind the Czech Republic and Estonia, and two decades behind the rest of the European Union.We did find, however, a number of successful initiatives, rewarded at international innovation and trade shows. Unfortunately, the overall picture is rather bleak; this paper suggests a series of possible solutions aimed at improving it.technological change, R&D, business innovation, fiscal incentives

    The Ability of Cyanobacterial Cells to Restore UV-B Radiation Induced Damage to Photosystem II is Influenced by Photolyase Dependent DNA Repair

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    Damage of DNA and Photosystem-II are among the most significant effects of UV-B irradiation in photosynthetic organisms. Both damaged DNA and Photosystem-II can be repaired, which represent important defense mechanisms against detrimental UV-B effects. Correlation of Photosystem-II damage and repair with the concurrent DNA damage and repair was investigated in the cyanobacterium Synechocystis PCC6803 using its wild type and a photolyase deficient mutant, which is unable to repair UV-B induced DNA damages. A significant amount of damaged DNA accumulated during UV-B exposure in the photolyase mutant concomitant with decreased Photosystem-II activity and D1 protein amount. The transcript level of psbA3, which is a UV-responsive copy of the psbA gene family encoding the D1 subunit of the Photosystem-II reaction center, is also decreased in the photolyase mutant. The wild-type cells, however, did not accumulate damaged DNA during UV-B exposure, suffered smaller losses of Photosystem-II activity and D1 protein, and maintained higher level of psbA3 transcripts than the photolyase mutant. It is concluded that the repair capacity of Photosystem-II depends on the ability of cells to repair UV-B-damaged DNA through maintaining the transcription of genes, which are essential for protein synthesis-dependent repair of the Photosystem-II reaction center

    Package Hermeticity Testing with Thermal Transient Measurements

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    The rapid incursion of new technologies such as MEMS and smart sensor device manufacturing requires new tailor-made packaging designs. In many applications these devices are exposed to humid environments. Since the penetration of moisture into the package may result in internal corrosion or shift of the operating parameters, the reliability testing of hermetically sealed packages has become a crucial question in the semiconductor industry.Comment: Submitted on behalf of EDA Publishing Association (http://irevues.inist.fr/handle/2042/16838
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