183,074 research outputs found

    Alexandra Kohn - How can we make this better? Understanding and improving the copyright transfer agreement experience

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    Slides for Alexandra Kohn's presentation as a part of the ABC Copyright 2020 Fall Speaker Series, hosted by the University of Alberta Copyright Office

    Max Kohn s/ Freund R. Rahn

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    Dedikationssilhouette nach rechts von Max Kohn, gewidmet Johann Rudolf Rahn (1841-1912)Anonyme/r Künstler/inHandschriftliche Widmung unterhalb des Porträts "Max Kohn s/ Freund R. Rahn

    Symmetry for positive critical points of Caffarelli–Kohn–Nirenberg inequalities

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    We consider positive critical points of Caffarelli–Kohn–Nirenberg inequalities and prove a Liouville type result which allows us to give a complete classification of the solutions in a certain range of parameters, providing a symmetry result for positive solutions. The governing operator is a weighted p-Laplace operator, which we consider for a general p∈(1,d). For p=2, the symmetry breaking region for extremals of Caffarelli–Kohn–Nirenberg inequalities was completely characterized in Dolbeault et al. (2016). Our results extend this result to a general p and are optimal in some cases

    A model for the neuron cell membrane

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    Bibliography: leaves 165-16 .Originally presented as the author's thesis, (M.S.) in the M.I.T. Dept. of Electrical Engineering, 1974. MIT OSP Project 21507.by Wolf Kohn

    Computer assisted anterior cruciate ligament reconstruction

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    Contains fulltext : 185901.pdf (Publisher’s version ) (Open Access)Katholieke Universeit Nijmegen, 06 april 2000Promotores : Huiskes, R., Kohn, D.M. Co-promotores : Banks, S.A., Kauer, J.M.G., Verhaar, J.A.N., Kampen, A. van117 p

    The second order Caffarelli-Kohn-Nirenberg identities and inequalities

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    This paper focuses on optimal constants and optimizers of the second order Caffarelli-Kohn-Nirenberg inequalities. Firstly, we aim to study optimal constants and optimizers for the following second order Caffarelli-Kohn-Nirenberg inequality in radial space: let N1N\ge1, tp>1t\ge p>1, \begin{equation}\label{0.1} \left(\int_{\mathbb{R}^N} \frac{|\Delta u|^p}{|x|^{p\alpha}} \mathrm{d}x\right)^{\frac{1}{p}} \left[\int_{\mathbb{R}^N} \frac{\left|\nabla u\right|^{\frac{p(t-1)}{p-1}}} {|x|^{\frac{p(t-1)}{p-1}\beta}} \mathrm{d}x\right]^{\frac{p-1}{p}} \ge C(N,p,t,\alpha,\beta) \int_{\mathbb{R}^N} \frac{\left|\nabla u\right|^t}{|x|^{t\gamma}} \mathrm{d}x. \end{equation} Secondly, we establish second order LpL^p-Caffarelli-Kohn-Nirenberg identities, and obtain optimal constants and optimizers of the second order LpL^p-Caffarelli-Kohn-Nirenberg inequalities (i.e., p=tp=t in \eqref{0.1}) in general space. Lastly, under some more general assumptions, we consider the optimal weighted second order Heisenberg Uncertainty Principles, which complements the recent work [``The sharp second order Caffareli-Kohn-Nirenberg inequality and stability estimates for the sharp second order uncertainty principle'', 2022, arXiv:2102.01425]. This paper's main novelty lies in the fact that we research the optimal versions of the second order Caffarelli-Kohn-Nirenberg inequalities \eqref{0.1} in radial space or in general space, and also establish the second order LpL^p-Caffarelli-Kohn-Nirenberg identities

    The Interdependence of R&D Activity and Debt Financing of Young Firms

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    We investigate the interdependence of debt financing and R&D activities of young firms. Using micro-level data of the KfW/ZEW Start-up Panel, our estimation results show that firm characteristics are more important than personal characteristics of the founders for explaining young firms' leverage, whereas firm characteristics and human capital of both founders and employees heavily influence R&D intensity. Applying a bivariate Tobit model, we find that there is a positive interdependent relationship between the share of loan financing and R&D intensity. A higher share of loan financing allows for more R&D in young firms and, at the same time, a higher R&D intensity allows for a higher loan share. This relationship cannot be detected by merely estimating single-equation models for R&D intensity and debt financing.innovation financing, capital structure, business start-ups, KfW/ZEW Start-up Panel, Germany

    Kohn-Rossi cohomology of spherical CR manifolds

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    We prove some vanishing theorems for the Kohn-Rossi cohomology of some spherical CR manifolds. To this end, we use a canonical contact form defined via the Patterson-Sullivan measure and Weitzenböck-type formulae for the Kohn Laplacian. We also see that our results are optimal in some cases.16 pages, revised versio

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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