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91.
This study examined the individual and combined effects of exposure to positive Latino exemplars and prototypes in the media on White audience members' attitudes about and judgments regarding Latinos in society. Although it was expected that exposure to these favorable models would promote positive evaluations of Latinos among White consumers, the extent to which one mode of presentation could be privileged in the production of more beneficial outcomes was uncertain based on existing research. These results cautiously indicate that while prototypes may offer some advantages in terms of reducing stereotyping, both exemplar‐ and prototype‐based characterizations of positive race‐related media content (alone and in combination) can positively influence consumers' perceptions of target racial/ethnic groups. 相似文献
92.
Timpano Kiara R.; Schmidt Norman B.; Wheaton Michael G.; Wendland Jens R.; Murphy Dennis L. 《Canadian Metallurgical Quarterly》2011,120(3):700
The gene coding for the brain derived neurotrophic factor (BDNF) has emerged as an interesting candidate for multiple brain and brain disorder-related phenomena. The primary aim of the present investigation was to consider the relationship between the BDNF Val66Met variant and two phenotypes: compulsive hoarding as a symptom dimension of obsessive–compulsive disorder (OCD), and body mass index (BMI). We examined the BDNF gene in a large (N = 301) clinical sample of probands with OCD. Participants were classified as hoarding or nonhoarding using a strict, multimeasure grouping approach. Results revealed that the Val/Val genotype was linked with hoarding classification and more severe hoarding behaviors, as well as greater BMI levels. Hoarding status was also associated with greater BMI scores, with individuals in the hoarding group being far more likely to be classified as obese compared with the nonhoarding group. Our findings may provide a distinct avenue through which hoarding and BMI could be linked. These findings are suggestive of a complex gene, body weight, and psychopathology relationship wherein a primitive, survival “thrifty gene” strategy may be conserved and represented in a subgroup of humans manifesting severe hoarding symptoms. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献
93.
Sandeep Menon David P. Schmidt 《Computer Methods in Applied Mechanics and Engineering》2011,200(41-44):2797-2804
A method is presented for conservatively transferring, or remapping, cell-centered variable fields from one mesh to another with second-order accuracy. The method is generally applicable to any polyhedral source or target mesh. Like the work of Farrell et al. [1], which was designed for finite-element computations, the proposed methodology uses a logical supermesh consisting of the intersections of polyhedra from both meshes. The resulting transfer process is well-suited for finite-volume methods that rely on cell-centered variables. The accuracy and efficacy of the new remapping process is demonstrated with numerical experiments and a computational fluid dynamics test. 相似文献
94.
In this paper, we present novel developments in aerodynamic shape optimization based on shape calculus as well as the proper treatment of aleatoric uncertainties in the field of aerodynamic design. 相似文献
95.
A new monolithic integrated exclusive OR gate (XOR) in E/sup 2/CL circuit design is presented. The symmetry with respect to both inputs makes it superior to the standard XOR gates in ECL or E/sup 2/CL for several applications. The circuit was realised using a conservative 2 mu m standard silicon bipolar technology.<> 相似文献
96.
Schmidt K.-U. 《IEEE transactions on information theory / Professional Technical Group on Information Theory》2006,52(7):3220-3232
Golay sequences are well suited for use as codewords in orthogonal frequency-division multiplexing (OFDM), since their peak-to-mean envelope power ratio (PMEPR) in q-ary phase-shift keying (PSK) modulation is at most 2. It is known that a family of polyphase Golay sequences of length 2m organizes in m!/2 cosets of a q-ary generalization of the first-order Reed-Muller code, RMq(1,m). In this paper, a more general construction technique for cosets of RM q(1,m) with low PMEPR is established. These cosets contain so-called near-complementary sequences. The application of this theory is then illustrated by providing some construction examples. First, it is shown that the m!/2 cosets of RMq(1,m) comprised of Golay sequences just arise as a special case. Second, further families of cosets of RMq(1,m) with maximum PMEPR between 2 and 4 are presented, showing that some previously unexplained phenomena can now be understood within a unified framework. A lower bound on the PMEPR of cosets of RMq(1,m) is proved as well, and it is demonstrated that the upper bound on the PMEPR is tight in many cases. Finally, it is shown that all upper bounds on the PMEPR of cosets of RMq(1,m) also hold for the peak-to-average power ratio (PAPR) under the Walsh-Hadamard transform (WHT) 相似文献
97.
98.
Dana Brown John Ferrario Randy Wolf Jing Li Jayendra Bhagat Mustapha Slamani 《Journal of Electronic Testing》2007,23(1):85-94
In this paper, testing of radio frequency (RF) devices with mixed-signal testers is discussed. General purpose automatic test
equipment (ATE) will be used. In this paper, a more universal test structure utilizing RF building blocks is proposed. A global
positioning system (GPS) device is used as an example to illustrate how to develop the RF test plan with this usage. The test
plan developed includes fast, cost-effective and dedicated circuitry.
相似文献
Jing LiEmail: |
99.
Yurong Ma Gerald Mehltretter Carsten Plüg Nadine Rademacher Martin U. Schmidt Helmut Cölfen 《Advanced functional materials》2009,19(13):2095-2101
Organic pigments are important crystalline substances, and their properties and applications rely on size and shape control. Pigment Yellow 181 (PY181) is an industrial azo pigment that is light and weatherfast and suitable for high temperature processing. One disadvantage is its needle‐like shape in the default β‐phase, which makes the pigment difficult to process in industry, e.g., in polymer melts, where a spherical structure would be ideal. Here, we show for the first time, that polymer‐induced liquid precursor structures can be formed even in association to a chemical reaction. Furthermore, it is demonstrated that biomineralization principles can be exploited for the generation of advanced functional materials, such as pigments with novel complex morphology and different properties. Stable PY181 microspheres of nanoplates in the β‐phase were obtained in mixed solvents of water and isopropanol by direct azo coupling under the directing influence of a designed copolymer additive aminobenzoylaminobenzamide‐acetoacetyl‐poly(ethylene imine)‐block‐poly(ethylene glycol) (ABABA‐acetoacetyl‐PEI‐b‐PEG). 相似文献
100.