2,655 research outputs found

    Lessons Learned: The Bush Foundation Infant Toddler Development Program Turns 10

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    Describes a complex ten-year initiative to develop curricula and train faculty, state agencies, and the child care community in reducing barriers to the healthy development of young children in Minnesota, North Dakota, and South Dakota

    Douglas Powell (Roscoe Burnems)

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    [remembering the taste of skin: dim prehistory dives]

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    The crystal structure determinations of Lu−b3−sS−b4−s, nonstoichiometric Nb−b1−s−ḅ06−sS−b2−s, and three Group VIII coordination complexes

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    The crystal structures of five selected inorganic compounds have been determined from single crystal x-ray measurements. Each of these materials was found to have interesting and novel structural features. A brief description of the structural results of each compound is discussed below;Metallic Lu(,3)S(,4) was found to crystallize in the orthorhombic space group F(,ddd) with a = 10.747(3), b = 22.813(6), and c = 7.602(2)(ANGSTROM). The lattice is a supercell of the rock-salt structure type, similar to LuS which has a = 5.43(ANGSTROM). The metal occupancies form sheared population waves which are normal to the (066) orthorhombic lattice planes. Several crystals exhibited a disordering of the orthorhombic lattice over the cubic sublattice;The 3-R form of Nb(,1.06)S(,2) crystallizes in the space group R(,3m) with hexagonal lattice parameters a = 3.3285(4) and c = 17.910(4)(ANGSTROM). The principal niobium sites, which are 0.97(1) occupied, are surrounded by trigonal prisms of sulfurs; the additional 0.09(1) niobium occupies distorted octahedral sites in the van der Waals layers. The octahedral distortions are due to repulsion of the additional niobium by metal in the principal sites;The compound bis((delta)-camphorquinonedioximato)nickel(II), Ni((delta)-HCQD)(,2), crystallizes in the orthorhombic space group P(,2(,1)2(,1)2(,1)) with a = 13.175(1), b = 13.652(2), and c = 12.031(3)(ANGSTROM). The ligands bond to the metal in a trans square-planar configuration via nitrogen and oxygen donor atoms. Absorption maxima in the infrared spectra at 1560 cm(\u27-1) and 1690 cm(\u27-1) are believed to be characteristic of vic-dioxime complexes which are N,O coordinated. There are no metal-metal or intermolecular hydrogen bonds in this structure;The hexanuclear cluster complex Ni((delta)-HCQD)(,2) (.) Ag(,3) (.) 2 1/2 CHCl(,3) crystallizes in the orthorhombic space group P(,2(,1)2(,1)2(,1)) with a = 15.990(5), b = 38.44(1), and c = 13.437(5)(ANGSTROM). This complex is prepared by the reaction of Ni((delta)-HCQD)(,2) with silver nitrate. Three Ni((delta)-HCQD)(,2)(\u27-) groups are bonded to a linear backbone of three silver atoms. The ligands in the Ni((delta)-HCQD)(,2)(\u27-) groups have changed from trans to cis configurations around each nickel. The solvent groups are disordered over three sites;The compound cis-dichlorobis(methyldiphenylphosphinite)-palladium(II) crystallizes in the monoclinic space group P(,2(,1)/n) with a = 12.539(6), b = 13.741(4), c = 15.147(4)(ANGSTROM), and (beta) = 94.6(5)(DEGREES). The phosphinite and chloride ligands coordinate to the metal in a cis square-planar configuration. The opening of the Cl-Pd-Cl angle 92.3(2)(DEGREES) is believed due to weakened Pd-Cl bonds and intramolecular hydrogen bond attractions between the chlorines and the phosphinite ligands;*DOE Report IS-T-911. This work was performed under Contract W-7405-eng-82 with the Department of Energy

    [studs and rings: favors of the piercing party]

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    Domesticity + queer semiotics in the aesthetic movement

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    This thesis explores the economic, social, and semiotic landscape surrounding the Aesthetic Movement in Britain that aided in the birth of what may be one of the first expressions of a recognizable queer sub-culture: namely a culture of queer domesticity in the nascent modern movement. This research argue that this queer expression was hidden in plain sight, deftly embedded into the complex construction of the late nineteenth-century interior, in a meta-language of objects and materiality that was symbolic and readable. Erwin Panofsky’s studies of iconography and iconology, as well as Pierre Bourdieu’s theories of taste and social class-stratification provide the framework from which a material culture analysis of this queer domesticity can begin. Objects and images analyzed have been gathered through the online archive of the Victoria and Albert Museum in London, as well as through in-depth literature review of both period and contemporary sources. The Aesthetic Movement was uniquely placed in European design history to manifest the ideal conditions necessary to birth the beginnings of a queer domesticity in the nineteenth century that would continue to develop in the twentieth and twenty-first centuries. Spanning the decades of the 1870s to the 1890s, the Aesthetic Movement was sandwiched between the twilight of the Victorian era and the rise of early modern movements such as Art Nouveau. Yet, from a contemporary perspective, it was simultaneously anachronistic, yet presciently forward in its design intent, as it looked towards traditional forms of design but with a burgeoning modernist sensibility. The Aesthetic Movement advocated for a moral re-valuation of beauty, in favor of “Art for arts sake”, with Lambourne and Stankiewicz both arguing that the movement elevated beauty to a spiritual (or self-actualizing), rather than secular level, wherein Aesthetes firmly believed that one could “accrue spiritual benefits” from correctly interpreting aesthetic forms. Both Stankiewicz and Lambourne approach the word “spiritual” as something separate from a simple religious preference. Rather “spiritual” in an Aesthetic period context was used to convey the appreciation of art and intellectual growth in these capacities, ultimately leading to the betterment of self. In the nineteenth-century, the British home and the domestic sphere were places of education and culture, both enforcing and re-producing the cultural norms necessary to support a class-stratified, gender-divided, industrialized landscape, while firmly establishing a “cult of domesticity” with its own particular rules of engagement. By the time the Aesthetic Movement arrived, British polite society was well acquainted with the idea that an interior, or the amalgamation of objects within it, shaped the minds of individuals who inhabited these spaces, often claiming or aspiring to elevated levels of taste and culture. Thus, with the rise of the Aesthetic Movement, and its hedonistic doctrine of beauty, the minds of the middle to upper class were already primed to receive new ideas through the semiotic language of objects, in this case being a nascent conception of early-modern queer identity and domesticity

    Effects of Foot Type on Multi-Segment Foot Motion in High- and Low-Arched Female Recreational Athletes

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    Introduction: Mal-alignment and dysfunction of the foot have been shown to result in an increased rate of injury and unique injury patterns. Aberrant foot function has been shown to contribute to repetitive stress and acute injuries. High-arched athletes have been shown to experience a greater rate of bony injury to the lateral aspect of the lower extremity while low-arched athletes experience greater rates of soft-tissue injury to the medial aspect of the lower extremity. Though foot type has been linked to these injury patterns, the mechanism by which these injury patterns occur remains unknown. Multi-segment foot models have been developed and allow for direct examination of motion within the foot. Therefore, the purpose of the current studies is to directly examine motion within the foot during vertical loading and dynamic loading tasks. Methods: Ten high- and 10 low-arched female athletes performed five trials in each of the following randomized conditions: walking, running, downward stepping, landing and a sit-to-stand exercise. Three-dimensional kinematics and ground reaction forces were collected simultaneously using a 7-camera motion capture system and force platform, respectively. Results: The HA athletes were less everted than the LA athletes in the ankle and mid-forefoot joints in all activities. The HA and LA athletes exhibited similar excursion values in all joints. Additionally, the HA athletes had a greater arch index and greater arch deformity during in the sit-to-stand task. Discussion and Conclusions: The HA athletes are less everted in all movements than the LA athletes; however excursion values were similar between the two groups. These data suggest the reason for different injury patterns within these two groups is not due to greater frontal plane ranges of motion. Furthermore, the sit-to-stand exercise showed that the HA athletes have a greater arch index but have greater deformation in response to a vertical load. The LA athletes exhibited less arch deformity but this deformity appears to be limited by the floor. The current study suggests the mechanism leading to different injury patterns in the HA and LA athletes is vertical compression of the arch

    [sheet wrapped like a burnoose. about his head]

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    Application of quantum Monte Carlo methods to molecular potential energy surfaces

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    Various computational methods have been used to generate potential energy surfaces, which can help us simulate and interpret how atoms or molecules behave during a chemical reaction. For accurate work, ab initio wavefunction methods have traditionally been used, which have some disadvantages. For example, highly accurate methods scale poorly with system size (n7 or higher) and are mostly not well parallelized for calculations with multiple processors. One alternative method that has more favorable scaling with system size and is well parallelized is a computational technique called quantum Monte Carlo (QMC). QMC methods scale with the number of electrons as n3 and have been found to scale almost linearly with the number of processors, even beyond 500,000 cores. However, despite the favorable scaling towards large systems, the cost of QMC methods is relatively expensive for small systems. Small systems nevertheless make important benchmarks necessary for the new methods to gain acceptance. Thus, it was determined to study QMC methods in a few benchmark systems in order to assess its accuracy and routine applicability. It was found that QMC methods can be very accurate comparing well with experimental measurements and other high-level ab initiomethods. Benchmark calculations with QMC produced realistic spectroscopic parameters for CO and N2. However, for small system sizes, they are relatively very expensive to perform with the cost being orders of magnitude higher than traditional methods. Consequently, their use in small systems will likely most often be restricted to only a few geometrical points of interest, unlike traditional methods. Nevertheless, deep insight into the electronic structure of a system can be obtained --Abstract, page iv
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