Construction of completely integrable systems by Poisson mappings

Pulling back sets of functions in involution by Poisson mappings and adding Casimir functions during the process allows to construct completely integrable systems. Some examples are investigated in detail.Comment: AmsTeX, 9 page

Industrial Research and Development, Intangible Capital Stocks, and Firm Profit Rates

This paper performs a cross sectional analysis of firm profitability to determine whether firm investments in research and development (R&D) are a source of above-average returns. Accounting profit rates are adjusted to take account of firm capital outlays on R&D and advertising (i.e., investments in intangible capital). Then, with the use of a structure-performance regression model, these adjusted profit rates are regressed on various determinant variables including a measure of the firm's stock of R&D capital. This analysis indicates that firms in research-intensive industries earn significantly above-average returns on their R&D capital. These results are robust to alternative assumptions concerning depreciation rates and other model specification changes.

Synthesis of aryl-substituted 2-pyridyl-1,10-phenanthrolines : a series of oriented terpyridine analogues

A 3 × 3 matrix of manisyl (4-methoxy-2,6-dimethylphenyl) substituted pyridyl-1,10-phenanthrolines has been synthesized by utilizing a general palladium catalyzed cross-coupling procedure. The directionality of these terdentate ligands will generate chiral octahedral ML2 complexes, potentially useful for the metal templated synthesis of topologically chiral structures

Ethical considerations in global HIV phylogenetic research

Phylogenetic analysis of pathogens is an increasingly powerful way to reduce the spread of epidemics, including HIV. As a result, phylogenetic approaches are becoming embedded in public health and research programmes, as well as outbreak responses, presenting unique ethical, legal, and social issues that are not adequately addressed by existing bioethics literature. We formed a multidisciplinary working group to explore the ethical issues arising from the design of, conduct in, and use of results from HIV phylogenetic studies, and to propose recommendations to minimise the associated risks to both individuals and groups. We identified eight key ethical domains, within which we highlighted factors that make HIV phylogenetic research unique. In this Review, we endeavoured to provide a framework to assist researchers, public health practitioners, and funding institutions to ensure that HIV phylogenetic studies are designed, done, and disseminated in an ethical manner. Our conclusions also have broader relevance for pathogen phylogenetics