Formulae relating the Bernstein and Iwahori-Matsumoto presentations of an affine Hecke algebra

We give explicit formulae for certain elements occurring in the Bernstein presentation of an affine Hecke algebra, in terms of the usual Iwahori- Matsumoto generators. We utilize certain minimal expressions for said elements and we give a sheaf-theoretic interpretation for the existence of these minimal expressions.Comment: To appear, J. of Algebr

Bullying among siblings

Background: Parents are often concerned about repeated conflicts between their daughters and sons. However, there is little empirical research of sibling bullying. Objective: To conduct a review of existing studies of sibling bullying. Are there any associations between sibling bullying and peer bullying at school? What are the consequences of sibling bullying? Is there good justification why sibling bullying has been so neglected in research? Method: Studies of sibling relationships were reviewed. Four quantitative studies were identified that report on both sibling and peer bullying. Results: Sibling bullying is frequent with up to 50% involved in sibling bullying every month and between 16% and 20% involved in bullying several times a week. Experience of sibling bullying increases the risk of involvement in bullying in school. Both, bullying between siblings and school bullying make unique contributions to explaining behavioral and emotional problems. There is a clear dose-effect relationship of involvement of bullying at home and at school and behavioral or emotional problems. Those involved in both have up to 14 times increased odds of behavioral or emotional problems compared to those involved in only one context or not at all. Conclusions: The empirical evidence is limited and studies are mostly cross-sectional studies. Nevertheless, the review suggests that for those victimized at home and at school behavioral and emotional problems are highly increased. Sibling relationships appear to be a training ground with implications for individual well-being. Strengthening families and parenting skills and increasing sibling support is likely to reduce bullying and increase well-being

The Market for Preclusion in Merger Litigation

The recent finding that corporate litigation involving Delaware companies very often takes place outside of Delaware has disturbed the long-settled understanding of how merger litigation works. With many, even most, cases being filed and ultimately resolved outside of Delaware, commentators warn that the trend is a threat to shareholders, to Delaware, and to the integrity of corporate law generally. Although the out-of-Delaware trend suggests that litigants are seeking to use the procedural rules of other jurisdictions to their advantage, we argue that the result need not threaten the interests of any of the stakeholders in deal litigation. We reframe the process of resolving merger litigation as a market for preclusion, in which plaintiffs seek to sell and defendants seek to buy an important element of transactional certainty. Moreover, this market has the potential to efficiently process and price shareholder complaints while also providing benefits to Delaware and to corporate law more generally. We are not blind to reality, however, and also address how a well-functioning market for preclusion can be distorted by the opportunistic conduct of plaintiffs’ and defense attorneys alike. Greater judicial oversight is necessary to preserve the benefits of this market while preventing the distortions brought on through opportunistic conduct. In order to make this a reality, however, judges in different courts must have a means of communicating and coordinating across state lines. We therefore offer a theory of horizontal comity in which judges build trust and cooperation through communication across jurisdictional boundaries. We use this theory to suggest a set of concrete policy proposals designed to provide for a more efficient market for preclusion

Extending the Research on 1:1 Technology Integration in Middle Schools: A Call for Using Institutional Theory in Educational Technology Research

In this essay, we argue institutional lenses are a vital but largely missing part of understanding how 1:1 technology programs can effect change in teaching and learning in middle schools. Indeed, while current research highlights the positive effects technology integration efforts, and 1:1 programs in particular, have on student learning and engagement, much has focused on the knowledge, skills, and beliefs of individuals or groups of actors. There is less research considering how the institutional context may impact teacher and administrator behavior regarding these and other technology-focused efforts thus limiting our ability to fully support schools and teachers in these efforts. We conclude by calling on researchers to use institutional theory to further understand and support implementation efforts and enhance outcomes for schools, teachers, and students alike

Modelling the widespread effects of TOC1 signalling on the plant circadian clock and its outputs

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This work was supported by the European Commission FP7 Collaborative Project TiMet (project 245143). SynthSys is a Centre for Integrative and Systems Biology supported by BBSRC and EPSRC award D019621. Work in P.M. laboratory is supported by grants from the Ramón Areces Foundation, from the Spanish Ministry of Science and Innovation (MICINN) (BIO2010-16483) and from EUROHORCS (European Heads Of Research Councils) and the European Science Foundation (ESF) through the EURYI Award.Peer reviewedPublisher PD

Household composition across the new Europe: Where do the new Member States fit in?

In this paper we present indicators of household structure for 26 of the 27 countries of the post-enlargement European Union. As well as broad indicators of household type, we present statistics on single-person and extended-family households, and on the households of children and older people. Our main aim is to assess the extent to which household structure differs between the "old" and "new" Member States of the European Union. We find that most of the Eastern European countries may be thought of as lying on the same North-North-Western-Southern continuum defined for the "old" EU Member States, and constituting an "extreme form" of the Southern European model of living arrangements, which we term the "Eastern" model. However, the Baltic states do not fit easily onto this continuum.Europe, European Union, family, household

Ergonomic Chair Design by Fusing Qualitative and Quantitative Criteria using Interactive Genetic Algorithms

This paper emphasizes the necessity of formally bringing qualitative and quantitative criteria of ergonomic design together, and provides a novel complementary design framework with this aim. Within this framework, different design criteria are viewed as optimization objectives; and design solutions are iteratively improved through the cooperative efforts of computer and user. The framework is rooted in multi-objective optimization, genetic algorithms and interactive user evaluation. Three different algorithms based on the framework are developed, and tested with an ergonomic chair design problem. The parallel and multi-objective approaches show promising results in fitness convergence, design diversity and user satisfaction metrics

Kunsia tomentosus (Rodentia: Cricetidae)

Kunsia tomentosus (Lichtenstein, 1830), the woolly giant rat, is a semifossorial cricetid typically associated with the Cerrado and Beni domains in central South America. Kunsia was recently revised and includes only 1 species. It is the largest extant sigmondontine and is readily distinguishable by its size, a body covered with dark-gray fur that is coarse and dense, moderately short tail, short limbs, bicolored manus and pes, and long, powerful claws. It inhabits primarily open grasslands and savannas from central and southwestern Brazil and northern Bolivia. K. tomentosus presently is not considered threatened; however, westernmost populations have presumably been extirpated in the past 2 centuries.Fil: Bezerra, Alexandra M. R.. Universidade do Brasília; Brasil. Escola Nacional de Saude Publica Sergio Arouca. Fundación Oswaldo Cruz; BrasilFil: Pardiñas, Ulises Francisco J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Diversidad y Evolución Austral; Argentin