290,872 research outputs found

    Why are the Children Dying?: Mixed-Race Children in Chang-rae Lee’s First Five Novels

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    The mixed-race children in each of Lee’s first five novels constitute an overarching set of symbols, reflecting, at first, society’s intolerance of miscegenation and its resulting mixed offspring, as demonstrated in the dysfunctional behaviors of the parent(s) (or society) and the death or disappearance of the mixed-race child. Then, later in the novel, a second mixed-race child’s birth, or its impending birth, signifies an acquired racial awareness on the part of the parent(s) and an overcoming of trauma that leads to hope for a more tolerant and understanding social environment for the mixed-race child

    Classification of Links Up to 0-Solvability

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    The nn-solvable filtration of the mm-component smooth (string) link concordance group, ⋯⊂Fn+1m⊂Fn.5m⊂Fnm⋯⊂F1m⊂F0.5m⊂F0m⊂F−0.5m⊂Cm,\dots \subset \mathcal{F}^m_{n+1} \subset \mathcal{F}^m_{n.5} \subset \mathcal{F}^m_n \dots \subset \mathcal{F}^m_1 \subset \mathcal{F}^m_{0.5} \subset \mathcal{F}^m_0 \subset \mathcal{F}^m_{-0.5} \subset \mathcal{C}^m, as defined by Cochran, Orr, and Teichner, is a tool for studying smooth knot and link concordance that yields important results in low-dimensional topology. The focus of this paper is to give a characterization of the set of 0-solvable links. We introduce a new equivalence relation on links called 0-solve equivalence and establish both an algebraic and a geometric classification of L0m\mathbb{L}_0^m, the set of links up to 0-solve equivalence. We show that L0m\mathbb{L}_0^m has a group structure isomorphic to the quotient F−0.5/F0\mathcal{F}_{-0.5}/\mathcal{F}_0 of concordance classes of string links and classify this group, showing that L0m≅F−0.5m/F0m≅Z2m⊕Z(m3)⊕Z2(m2).\mathbb{L}_0^m \cong \mathcal{F}_{-0.5}^m/\mathcal{F}_0^m \cong \mathbb{Z}_2^m \oplus \mathbb{Z}^{m \choose 3} \oplus \mathbb{Z}_2^{m \choose 2}. Finally, using results of Conant, Schneiderman, and Teichner, we show that 0-solvable links are precisely the links that bound class 2 gropes and support order 2 Whitney towers in the 4-ball.Comment: 34 page

    Sunrise at Damariscotta Lake

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    BEES. THEIR VISION, CHEMICAL SENSES, AND LANGUAGE by Karl von Frisch

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    BEES. THEIR VISION, CHEMICAL SENSES, AND LANGUAGE. Karl von Frisch, the University of Munich. Revised edition. Cornell University Press, Ithaca, New York and London. 157 pages. 7.50(3.50),paperback7.50 ( 3.50), paperback 2.45

    Bill Kruskal and the Committee on National Statistics

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    Discussion of ``The William Kruskal Legacy: 1919--2005'' by Stephen E. Fienberg, Stephen M. Stigler and Judith M. Tanur [arXiv:0710.5063]Comment: Published in at http://dx.doi.org/10.1214/088342306000000394 the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org

    A commentary on Jeremiah: exile and homecoming

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    Brueggemann, Walter. A commentary on Jeremiah: exile and homecoming. Grand Rapids: Eerdmans, 1998

    Sunset at Pemaquid Point

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    Preaching Mark

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    Reid, Robert Stephen. Preaching Mark. St Louis: Chalice Press, 1999

    The Use of Ultrasonic Frequencies as a Mechanism for Refining

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    The objective of this thesis was to explore the use of ultrasonic frequencies as a mechanism for refining. Through cooperation with the Intex Corporation, an ultrasonic cleaning apparatus, that was easily adaptable to.use as a refiner, was borrowed. The experimental procedure indicated that ultrasonic refining coupled with mechanical ·refining produced a sheet with improved tear, tensil, fold and opacity characteristics. The burst, however, was slightly lower. An interesting phenomenon that occurred was the plateauing effect that is observed, most distinctly on the graphs of burst and tensil vs. freeness. this plateau seems to be a phenomenon where the maximum value of a test is held relatively constant over a wide freeness range. The peaking, and quick fall off that occurs with mechanical refining is not present with ultrasonic refining. One problem that exists is that the ultrasonic power requirements appear to be relatively high
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