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331.
A calibration test is described for monitoring the operation of equipment used to develop latent fingerprints on thermal paper by the application of either controlled or uncontrolled heat. A working solution of a water/glycerol emulsion and butylene glycol is applied to thermal paper by means of either a vinyl stamp and pad, or a marker pen. Varying the amount of butylene glycol enables the thermal paper to change color at different temperatures between approximately 40 and 60°C, which is below the normal color change temperature of the paper. The described test may be used to verify the correct operation, at different temperatures, of a controlled heat source during and after fingerprint development (such as the Hot Print System) or to monitor the paper temperature with an uncontrolled heat source (such as a warm air blower), thereby avoiding unintentional coloring of the entire paper surface. 相似文献
332.
Jeremy Prichard Paul A. Watters Caroline SpiranovicAuthor vitae 《Computer Law & Security Report》2011,27(6):585-600
With continual advances in Internet capability the child pornography market is experiencing a boom in demand and supply. Attempts to reduce the market challenge legislators, law enforcement agencies, practitioners and researchers alike – due in large part to the decentralised and global nature of the Internet. Much research has focused on frequent users of child pornography and whether such behaviour is interrelated with child sexual assaults. This article instead draws attention to onset, the first deliberate viewing of child pornography. It presents the results of a three-month study of a global Peer-to-Peer network, isoHunt. Analysis of the site’s Top 300 search terms indicated that child pornography is consistently shared. Risk factors for onset are discussed, including the potential normalisation of child pornography among Internet subcultures. Strategies are discussed to encourage subcultures to inhibit child pornography use and to increase understanding of the harms associated with such material. Implications for legal systems, policy and research are explored. 相似文献
333.
Large players in the nanogame: dedicated nanotech subsidiaries or distributed nanotech capabilities?
Vincent Mangematin Khalid Errabi Caroline Gauthier 《The Journal of Technology Transfer》2011,36(6):640-664
Nanotechnologies are reshaping the boundaries between industries, combining two aspects of innovation—both enhancing competences
based on cumulative knowledge and experience and destroying competences by forcing the renewal of the firm’s knowledge base.
To analyze how worldwide R&D leaders adapt to this new technology, we conduct an econometric analysis of about 3,000 subsidiaries
of the largest R&D spenders. We find that large groups are creating medium size subsidiary companies to explore nanotechnologies.
Knowledge circulates mostly amongst subsidiaries within the same group and scientific clusters do not affect their involvement
in nanotechnologies. Nanotechnologies remain marginal within these subsidiaries’ knowledge bases and are distributed within
corporate groups, stimulating recombination between nanotechnology and other technologies. 相似文献