801 research outputs found

    Topology and Nematic Ordering II: Observable Critical Behavior

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    This paper is the second in a pair treating a new lattice model for nematic media. In addition to the familiar isotropic (I) and nematically ordered (N) phases, the phase diagram established in the previous paper (Paper I) contains a new, topologically ordered phase (T) occuring at large suppression of topological defects and weak nematic interactions. This paper (Paper II) is concerned with the experimental signatures of the proposed phase diagram. Specific heat, light scattering and magnetic susceptibility near both the N/T and I/T transitions are studied, and critical behavior determined. The singular dependences of the Frank constants (K1K_1, K2K_2, K3K_3) and the dielectric tensor anisotropy (Δϵ\Delta \epsilon) on temperature upon approaching the N/T transition are also found.Comment: 10 pages, RevTeX 3.

    Comparison of several concretes for their characteristics affecting prestress losses

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    In this report are presented the results of an experiment conducted to compare the concretes produced at the seven manufactures of prestressed concretes produced at the seven manufacturers of prestressed concrete in Pennsylvania with regard to their potential in contributing to prestress losses

    Creation of vortices in a Bose-Einstein condensate by a Raman technique

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    We propose a method for taking a Bose-Einstein condensate in the ground trap state simultaneously to a different atomic hyperfine state and to a vortex trap state. This can be accomplished through a Raman scheme in which one of the two copropagating laser beams has a higher-order Laguerre-Gaussian mode profile. Coefficients relating the beam waist, pulse area, and trap potentials for a complete transfer to the m = 1 vortex are calculated for a condensate in the non-interacting and strongly interacting regimes.Comment: RevTex, 4 pages, 2 PostScript figure

    ASSESSING THE MEDIATING ROLE OF CUSTOMER RELATIONSHIP MANAGEMENT IN RELATION WITH ORGANIZATIONAL LEARNING ON ORGANIZATIONAL PERFORMANCE (CASE STUDY: BRANCHES OF GHAVAMIN BANK IN GUILAN PROVINCE)

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    Abstract. Nowadays performances of banks and identification of its effective factors has much importance.Because in current competitive world organizations are active in an environment that permanently need improving performance and should try to achieve high performance. In this direction current research for considering the role of CRM in relation with organizational learning and performance in Ghavamin bank has been designed as private bank in Guilan province. Statistical society of current research includes staff of Ghavamin bank in Guilan province and method of sampling I this research is random-classified one that 155 staff out of statistical society of 190 ones were chosen as sample. Method of data collection in this research was field study and its tool is questionnaire. For proving validity of questionnaire content validity and for determining reliability cronbach alpha coefficient was used. For testing hypothesis of research structural equation modeling was used by using lisrel software. Result showed thatorganizational learning has direct effect through bank’s performance and through CRM it has positive effect.Keywords: Organizational learning, Organizational performance, CRM

    Genome Assembly Improvement and Mapping Convergently Evolved Skeletal Traits in Sticklebacks with Genotyping-by-Sequencing.

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    Marine populations of the threespine stickleback (Gasterosteus aculeatus) have repeatedly colonized and rapidly adapted to freshwater habitats, providing a powerful system to map the genetic architecture of evolved traits. Here, we developed and applied a binned genotyping-by-sequencing (GBS) method to build dense genome-wide linkage maps of sticklebacks using two large marine by freshwater F2 crosses of more than 350 fish each. The resulting linkage maps significantly improve the genome assembly by anchoring 78 new scaffolds to chromosomes, reorienting 40 scaffolds, and rearranging scaffolds in 4 locations. In the revised genome assembly, 94.6% of the assembly was anchored to a chromosome. To assess linkage map quality, we mapped quantitative trait loci (QTL) controlling lateral plate number, which mapped as expected to a 200-kb genomic region containing Ectodysplasin, as well as a chromosome 7 QTL overlapping a previously identified modifier QTL. Finally, we mapped eight QTL controlling convergently evolved reductions in gill raker length in the two crosses, which revealed that this classic adaptive trait has a surprisingly modular and nonparallel genetic basis
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