580 research outputs found

    Coherence for Categorified Operadic Theories

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    It has long been known that every weak monoidal category A is equivalent via monoidal functors and monoidal natural transformations to a strict monoidal category st(A). We generalise the definition of weak monoidal category to give a definition of weak P-category for any strongly regular (operadic) theory P, and show that every weak P-category is equivalent via P-functors and P-transformations to a strict P-category. This strictification functor is then shown to have an interesting universal property.Comment: 13 pages, 1 figure. Presented at 82nd PSSL, Glasgow, May 200

    Coherence for categorified operadic theories

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    Given an algebraic theory which can be described by a (possibly symmetric) operad P, we propose a definition of the weakening (or categorification) of the theory, in which equations that hold strictly for P -algebras hold only up to coherent isomorphism. This generalizes the theories of monoidal categories and symmetric monoidal categories, and several related notions defined in the literature. Using this definition, we generalize the result that every monoidal category is monoidally equivalent to a strict monoidal category, and show that the “strictification” functor has an interesting universal property, being left adjoint to the forgetful functor from the category of strict P -categories to the category of weak P -categories. We further show that the categorification obtained is independent of our choice of presentation for P , and extend some of our results to many-sorted theories, using multicategories

    The Value of the Vestibular/Ocular Motor Screening (VOMS) in Evaluating Adolescent Patients with Concussions

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    OBJECTIVE To determine the VOMS can differentiate between typical and protracted recoveries in adolescent patients

    Uniform patchy and hollow rectangular platelet micelles from crystallizable polymer blends

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    Growing patterned rectangular objects The growth of patterned objects usually requires a template to aid the positioning of multiple materials. Qiu et al. used the seeded growth of a crystallizable block copolymer and a homopolymer to produce highly uniform rectangular structures (see the Perspective by Ballauff). Chemical etching, or dissolution, of uncross-linked regions of the rectangular structures produced perforated platelet micelles. The sequential addition of different blends and cross-linking/dissolution strategies allowed the formation of well-defined hollow rectangular micelles, which can be functionalized in a variety of ways. Science , this issue p. 697 ; see also p. 656 </jats:p

    Subjective experiences of compulsory treatment from a qualitative study of early implementation of the Mental Health (Care and Treatment)(Scotland) Act 2003

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    Compulsory psychiatric treatment is highly contested, and little research has focused specifically on direct experiences. The Mental Health (Care & Treatment) (Scotland) Act, 2003 introduced new roles and provisions including community treatment orders, and was designed to increase participation, ensure treatment was beneficial and was the ‘least restrictive’ alternative. This article draws on findings from semistructured interviews with 49 individuals who had experienced compulsion under this new legislation during 2007-08, that were part of a broader cohort study. Interviews with service users were conducted at two stages with 80% agreeing to be interviewed twice. The sample included people on a variety of compulsory orders from four Health Board areas, some of whom had been detained for the first time, while others reported ‘revolving door’ experiences. Peer researchers who were mental health service users carried out the interviews with professional researchers. The findings suggest that legislation had a limited impact on participation in the process of compulsion. Consensus was that although service users felt there was increased opportunity for their voices to be heard, this was not matched by having increased influence over professional decision-making, especially in relation to drug treatments. According to people's direct experiences, the passing of the legislation in itself had done little to change the dominant psychiatric paradigm. While providing a foundation for improving the process of compulsion, the findings suggest that as well as legislative reform, fundamental shifts in practice are needed both in terms of the nature of therapeutic relationships, and in embracing more holistic and recovery perspectives

    Nonverbal intelligence of soccer players according to their age, gender and educational level

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    AbstractThis study was to investigate the nonverbal intelligence of soccer players according to their age, gender and educational level. For this purpose, data were collected from 353 soccer players using adapted version of the TONI-2. The soccer players had a mean age of 14.78 years. Collected data was analyzed by ANOVA for age groups, t statistics for comparisons of gender and level of education. ANOVA and t statistics of the data revealed the significant differences between age groups, gender and level of education. Multiple comparisons showed that TONI-2 points increased with the age from 13 through 17 in order. Results also indicated that female players from male players and high school players from secondary school players have higher TONI-2 points in soccer

    Transformation and patterning of supermicelles using dynamic holographic assembly

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    Although the solution self-assembly of block copolymers has enabled the fabrication of a broad range of complex, functional nanostructures, their precise manipulation and patterning remain a key challenge. Here we demonstrate that spherical and linear supermicelles, supramolecular structures held together by non-covalent solvophobic and coordination interactions and formed by the hierarchical self-assembly of block copolymer micelle and block comicelle precursors, can be manipulated, transformed and patterned with mediation by dynamic holographic assembly (optical tweezers). This allows the creation of new and stable soft-matter superstructures far from equilibrium. For example, individual spherical supermicelles can be optically held in close proximity and photocrosslinked through controlled coronal chemistry to generate linear oligomeric arrays. The use of optical tweezers also enables the directed deposition and immobilization of supermicelles on surfaces, allowing the precise creation of arrays of soft-matter nano-objects with potentially diverse functionality and a range of applications
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