Composition Challenges for Sensor Data Visualization

International audienceConnected objects and monitoring systems continuously produce data about their environment. Dashboards are then designed to aggregate and present these data to end-users. Technologies used to design and implement visualization dashboards are babbling from a software engineering point of view. This paper highlights how this domain could benefit from leveraging separation of concerns and software composition paradigms to support dashboard design

Understanding Relations between People and their Pets

Abstract As evidenced by the popularity of animal behavior shows and books, online viral pet videos, and the presence of dogs or cats in two-thirds of American homes, pets clearly play an important role in many Americans' lives. At the same time, however, millions of pets are abandoned, abused, and euthanized every year. What should we make of these seemingly conflicting realities? How do Americans really feel about and treat their pets? And what explains the differences? In recent years social scientists have begun to investigate the various and changing interactions between humans and animals. In particular, a growing body of research examines humans' relationships with pets, most often dogs and cats. This paper reviews recent research in this field. After discussing what differentiates pets from other animals, the paper begins with a review of research investigating the meanings and roles of pets in people's lives and the nature and benefits of human-pet attachments. Secondly, it reviews research on the factors that help explain why some people have a higher regard for pets than others. The paper concludes with a discussion of some of the limitations of existing research and some suggestions on how to expand future investigations

Corporate Governance, Incentives, and Tax Avoidance

We examine the link between corporate governance, managerial incentives, and corporate tax avoidance. Similar to other investment opportunities that involve risky expected cash flows, unresolved agency problems may lead managers to engage in more or less corporate tax avoidance than shareholders would otherwise prefer. Consistent with the mixed results reported in prior studies, we find no relation between various corporate governance mechanisms and tax avoidance at the conditional mean and median of the tax avoidance distribution. However, using quantile regression, we find a positive relation between board independence and financial sophistication for low levels of tax avoidance, but a negative relation for high levels of tax avoidance. These results indicate that these governance attributes have a stronger relation with more extreme levels of tax avoidance, which are more likely to be symptomatic of over- and under-investment by managers

Spherulitic crystal growth drives mineral deposition patterns in collagen-based materials

The formation of the hard tissues that provide support and mobility to organisms is achieved through the interplay of inorganic crystals and an organic framework composed of collagen and a small percentage of non-collagenous proteins. Despite their clinical relevance, the mechanisms governing mineralization of the extracellular matrix are still poorly understood. By using 3D electron tomography and high-resolution electron microscopy imaging and spectroscopy, it has been demonstrated that mineralization proceeds through a spherulitic-like crystal growth process. First, aggregates of disordered crystals form in the interfibrillar spaces, which lead to the mineralization of adjacent fibrils. Mineral propagates steadily through the inter- and intrafibrillar spaces of the collagen structure forming layered spherulites that grow to confluence. The structure of the collagen fibrils serves as a protein scaffold to guide the formation of a myriad of platelet-shaped crystallites that make up each of these spherulites. At their periphery, nanosized unmineralized areas remain, leading to the formation of the characteristic lacy pattern observed in the transversal cross-section of mature calcified tissues. This study provides fundamental insights into the bone formation process and represents a potential strategy for complex materials design

Molecular characterisation of viruses from Kiwifruit

In 2003 Apple stem grooving virus was discovered in Actinidia accessions from China, being held in quarantine in Auckland. Subsequent examination of kiwifruit germplasm from the same source has detected several additional viruses, including a ~300 nm rigid rod related to Ribgrass mosaic virus (Tobamovirus), a 700-750 nm flexuous virus related to Citrus leaf blotch virus (Flexiviridae) and a novel vitivirus. Currently these viruses have not been reported from commercial kiwifruit crops in New Zealand or elsewhere. The biological properties of the viruses from kiwifruit and their phylogenetic relationships with similar viruses from other plants will be described, and the possible implications for the international movement of Actinidia germplasm are discussed