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European Journal of Wood and Wood Products - For the purposes of structural design, cross-laminated timber (CLT) panels are typically chosen from tables detailing standardized layups. While this is... 相似文献
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Alexandru T. Balaban William A. Seitz Douglas J. Klein 《Fullerenes, Nanotubes and Carbon Nanostructures》2013,21(3):467-476
Abstract Three “onion type” double carbon cages (consisting of an inner sp3-hybridized C60 buckminsterfullerene skeleton and an outer larger carbon cage with icosahedral symmetry, with covalent bonds between the carbon atoms of the 5-membered rings) are described and their strain energies are discussed: (i) when the outer cage is a C120 cage derived from buckminsterfullerene by replacing each bond between two six-membered rings by an acetylenic group, the strain is smallest.; (ii) when the same derivation concerns each bond between 5- and 6-membered rings leading to a C180 outer cage, the strain is largest.; (iii) when the outer cage is C180 with benzenoid rings, the strain is intermediate. 相似文献
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V. A. Borschak V. A. Smyntyna Ie. V. Brytavskyi A. P. Balaban N. P. Zatovskaya 《Semiconductors》2011,45(7):894-899
The possibility of using a model of the tunnel-hopping charge transport to calculate the conductivity in the barrier region
of the illuminated nonideal heterojunction is shown. The current-voltage characteristics of the heterojunction was calculated
taking into account the prevalence of the tunnel-hopping transport mechanism in the barrier region and the change in the potential
barrier shape upon exposure to light. It is shown that the current-voltage characteristics of such a heterojunction calculated
at various illumination intensities are in good agreement with those observed experimentally. 相似文献
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Berent Iris; Balaban Evan; Lennertz Tracy; Vaknin-Nusbaum Vered 《Canadian Metallurgical Quarterly》2010,139(3):418
Domain-specific systems are hypothetically specialized with respect to the outputs they compute and the inputs they allow (Fodor, 1983). Here, we examine whether these 2 conditions for specialization are dissociable. An initial experiment suggests that English speakers could extend a putatively universal phonological restriction to inputs identified as nonspeech. A subsequent comparison of English and Russian participants indicates that the processing of nonspeech inputs is modulated by linguistic experience. Striking, qualitative differences between English and Russian participants suggest that they rely on linguistic principles, both universal and language-particular, rather than generic auditory processing strategies. Thus, the computation of idiosyncratic linguistic outputs is apparently not restricted to speech inputs. This conclusion presents various challenges to both domain-specific and domain-general accounts of cognition. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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Morgan P.N. Iannuzzelli R.J. Epstein F.H. Balaban R.S. 《IEEE transactions on medical imaging》1999,18(7):649-653
A real-time cardiac magnetic resonance imaging (MRI) system has been implemented using digital signal processing (DSP) technology. The system enables real-time acquisition, processing, and display of ungated cardiac movies at moderate video rates of 20 images/s. A custom graphical user interface (GUI) provides interactive control of data acquisition parameters and image display functions. Images can be compressed into moving-picture experts group (MPEG) movies, but are displayed on the console without compression during the scan. Compared to existing real-time MRI systems, implementation with DSP's allows rapid parallel computations, fast data transfers, and greater system flexibility, including the ability to scale to multiple channels, at the expense of somewhat higher component cost. 相似文献
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Recently a novel view on Kekulé valence structures (or resonance structures) was reported in which their standard geometrical representation was replaced by a numerical representation obtained by assigning π-electrons associated with CC double bonds to individual benzenoid rings. In the present article, we examine in more detail the partitioning of π-electrons to benzenoid rings for cata-condensed benzenoid hydrocarbons. For special families of cata-condensed benzenoids, we offer formulas which allow one to obtain the average π-electron ring content for individual benzenoid rings of polycyclic conjugated hydrocarbons. We also show that the average π-electron ring content for individual benzenoid rings can be calculated from Pauling bond orders without a need to examine all Kekulé resonance structures of a molecule. 相似文献