Balance torquemeter Patent

Torquemeter for determining magnitude of torque generated by interaction of magnetic dipole between test specimen and ambient magnetic fiel

Perceptions of control in the victims of school bullying : the importance of early intervention

Improvements in anti-bullying strategies are likely to depend upon a greater understanding of the psychological processes at work. Transactional theories of coping may be appropriate models to use when examining how the victims of bullying cope with victimization. Research has started to examine the coping strategy aspects of such theories but has neglected the process of appraisal. The current paper aims to address this by examining the perceptions of control in the victims of bullying, and how these are influenced by such variables as gender and the severity, persistence and type of bullying experienced. A self-report questionnaire examining coping responses and perceptions of control regarding the bullying situation was administered to 348 children aged nine to 11 years. Data from the victims of bullying (N = 184) revealed that girls felt less in control of frequent bullying than infrequent bullying, a trend not evident in boys (p < 0.05). In addition, a significantly higher proportion of the male victims of bullying felt more in control than female victims (p < 0.01). Finally, victims of short-term bullying were significantly more likely to feel in control than were victims of longer-term bullying (p < 0.05). The complex relationship between gender, perceptions of control, and the persistence and frequency of bullying has implications for early intervention and for professionals working with the victims of bullying

ISIS-A spacecraft magnetic tests

Spin and attitude control system tests and magnetic moments of ISIS-A spacecraf

Asymptotic Weight Enumerators of Randomly Punctured, Expurgated, and Shortened Code Ensembles

In this paper, we examine the effect of random puncturing, expurgating, and shortening on the asymptotic weight enumerator of certain linear code ensembles. We begin by discussing the actions of the three alteration methods on individual codes. We derive expressions for the average resulting code weight enumerator under each alteration. We then extend these results to the spectral shape of linear code ensembles whose original spectral shape is known, and demonstrate our findings on two specific code ensembles: the Shannon ensemble and the regular (j, k) Gallager ensemble

Hardware and software status of QCDOC

QCDOC is a massively parallel supercomputer whose processing nodes are based on an application-specific integrated circuit (ASIC). This ASIC was custom-designed so that crucial lattice QCD kernels achieve an overall sustained performance of 50% on machines with several 10,000 nodes. This strong scalability, together with low power consumption and a price/performance ratio of $1 per sustained MFlops, enable QCDOC to attack the most demanding lattice QCD problems. The first ASICs became available in June of 2003, and the testing performed so far has shown all systems functioning according to specification. We review the hardware and software status of QCDOC and present performance figures obtained in real hardware as well as in simulation.Comment: Lattice2003(machine), 6 pages, 5 figure

Immobilized photosensitizers for antimicrobial applications

Photodynamic antimicrobial chemotherapy (PACT) is a very promising alternative to conventional antibiotics for the efficient inactivation of pathogenic microorganisms; this is due to the fact that it is virtually impossible for resistant strains to develop due to the mode of action employed. PACT employs a photosensitizer, which preferentially associates with the microorganism, and is then activated with non-thermal visible light of appropriate wavelength(s) to generate high localized concentrations of reactive oxygen species (ROS), inactivating the microorganism. The concept of using photosensitizers immobilized on a surface for this purpose is intended to address a range of economic, ecological and public health issues. Photosensitising molecules that have been immobilized on solid support for PACT applications are described herein. Different supports have been analyzed as well as the target microorganism and the effectiveness of particular combinations of support and photosensitiser