2,610 research outputs found

    A Pyrrole-Based Triazolium-Phane with Nh and Cationic Ch Donor Groups as a Receptor for Tetrahedral Oxyanions that Functions in Polar Media

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    The pyrrole-based triazolium-phane 1(4+)center dot 4BF(4)(-) has been prepared via the tetraalkylation of a macrocycle originally prepared via click chemistry. It displays a high selectivity for tetrahedral oxyanions relative to various test monoanions and trigonal planar anions in mixed polar organic-aqueous media. This selectivity is solvent dependent and is less pronounced in acetonitrile. Theoretical calculations were carried out in with the chloride anion in an effort to understand the influence of solvent on the intrinsic hydrogen bonding ability of the donor groups (pyrrole N-H, benzene C-H and triazolium C-H). The host-guest interactions between receptor 1(4+)center dot 4BF(4)(-) and representative tetrahedral oxyanions were further analysed by H-1 NMR spectroscopy, and the findings proved consistent with the differences in the intrinsic strength of the various H-bond donor groups inferred from the electronic structure calculations carried out in methanol, namely that (CH)(+)-anion interactions are less important in an energetic sense than neutral CH-anion interactions in polar media. Single crystal X-ray diffraction analyses of the mixed salts 1(4+)center dot HP2O73-center dot BF4- and 31(4+)center dot 4H(2)PO(4)(-)center dot 8BF(4)(-) confirmed that receptor 1(4+) can bind the pyrophosphate and phosphate anions in the solid state.Cai, Jiajia, Benjamin P. Hay, Neil J. Young, Xiaoping Yang, and Jonathan L. Sessler. "A pyrrole-based triazolium-phane with NH and cationic CH donor groups as a receptor for tetrahedral oxyanions that functions in polar media." Chemical Science 4, no. 4 (Jan., 2013): 1560-1567.Chemistr

    Utopia’s Extinction: the Anthroposcenic Landscapes of Ursula K. Le Guin

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    In the Anthropocene epoch, the utopian prospect which has structured civilizational development throughout recorded history is extinguished almost entirely. Our anthropocentric fantasies of dominion over the natural world have proven harmful not only to the biosphere we inhabit, but to the continued existence of our own species. Instead, new conceptualizations which foreground the role of humanity within its environment must take precedence. Intricate portrayals of humanity’s interdependence within its planetary environment—and illustrations of the damage that our daily lives inflict upon the natural world—have long been apparent in the Science Fiction genre. By emphasising the importance of fostering and recognizing our species’ symbiotic relationship with its natural world through practices of daily life, the Anthroposcenic landscapes of Ursula K. Le Guin’s Science Fiction texts exert a posthuman vision which refutes anthropocentric ideologies, and decenters the notion of progress as an eschatology. Accordingly, this article closely analyses three texts of Le Guin’s Hainish Cycle which particularly exemplify her Anthroposcenic objective; The Word for World is Forest (1972); Planet of Exile (1966); and City of Illusions(1967). These texts extrapolate the Anthropocene epoch into a cosmic paradigm, and so demonstrate the extinction of utopian potential it personifies vividly

    Moving Beyond Humanism in Source Code

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    This article springs from the claim that representations of mundane human life are just as prominent as nova in contemporary sf, and that through their generative interplay the genre figures a transient dreamscape for visitation by the (post)human mind, via which the reader gains an expanded perception of not only their own empirical environment, but also of posthuman possibility. The presence of the quotidian in sf confirms the capacity of the (post)human mind to transcend the presumptions of traditional humanism. By deconstructing the rhetorical role of nova in Duncan Jones’s Source Code (2011), I demonstrate that the novel content of sf fades intratextually, just as nova within the genre tend towards entropy intertextually; an accumulative process I term novum decay

    A Concordance Analysis of Ursula K. Le Guin’s Hainish Cycle

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    Whereas prior academic studies of the Hainish Cycle have been primarily produced by means of textual analysis, I demonstrate that a concordance analysis of its six novels reveals significant, yet heretofore overlooked, ecological aspects of Le Guin’s series. As becomes apparent, snow imagery literalises the Hainish Cycle’s New Wave moves from technological, to biological and sociological concerns, emphasising the series’ significant challenge to the technophilic assumptions and eschatological foundations of the preceding Golden Age. Accordingly, this article demonstrates the primacy of the datum of snow within the narratives of the Hainish Cycle novels, and delineates its important contribution to the series’ SFnal dialectic on aggregate

    The Mundane Foundation of Isaac Asimov’s Robot Stories

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    As this article demonstrates, the characteristic focus within Asimov scholarship exclusively upon the technological aspects of his robot stories and novels has meant that the importance of their mundane components have been systematically overlooked. By shifting critical focus to the mundane aspects of these works, it becomes newly apparent that Asimov uses a mundane foundation to problematise humanistic constructs of the human. These mundane components comprise an essential cognitive foundation of known phenomena, via which the comprehension of Asimov’s profoundly novel robots becomes plausible contextually. By readily anticipating and demonstrating the phenomenological impact of the everyday positionality of technology in the contemporary world, Asimov’s robot stories and novels recode the outdated signifier of the ‘human’ in a posthumanistic paradigm

    Fully Optimized: The (Post)human Art of Speedrunning

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    Over time, speedrunning communities work collaboratively to optimize, reconfigure, and improve upon the quickest possible completion times of video game titles. I argue that this progressive ethos, coupled with the performative nature of modern speedrunning, lends a distinctly artistic character to the practice. Speedrunning is a form of (post)human expression that is manifested not only through the programming of a video game, but also through players’ approach to gameplay. By choosing to speedrun, players actively impose a discrete temporal limit on the inhuman algorithms of video games, and so attempt to conquer and thereby curtail their technological novelty. However, within the field of game studies, the literature published on speedrunning to date is almost unilaterally anthropocentric, and focuses on the transgressive nature of the practice, ignoring the intricacies of its technological fundament. Rather, (post)humans and technologies interact in a transformational manner through intra-active assemblages, broadening the condition of embodiment. To theorize a posthumanistic theory of the practice, this article takes as its focus the speedrunning community of the video game Super Mario Odyssey and suggests that speedrunning may ultimately be considered a mode of (post)human performance art

    (Post)human Temporalities: Science Fiction in the Anthropocene

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    Although many SF texts proceed from the speculative premise that our species will continue to develop technologically, and hence become increasingly posthuman, our species’ continuance into even the next century is by no means assured. Rather, the Anthropocene exerts a new temporal logic; it is an age defined by an intensification of geological timescales. It is therefore noteworthy that many contemporary SF texts are ecologically interventionist and figure apocalyptic future temporalities which curtail the posthuman predilection common to the genre. This article analyses a tetrad of literary texts, written at various points during the last three decades, which summatively reveal the mutations of the (post)human temporalities figured by cli-fi texts. These four texts are: Kim Stanley Robinson’s Mars Trilogy (1992-1996); Jeanette Winterson’s The Stone Gods (2007); Michel Faber’s The Book of Strange New Things (2014); and Paolo Bacigalupi’s The Water Knife (2015)

    Synergetic Strength

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    The Posthuman Lifeworld: A Study of Russell T. Davies’s Doctor Who

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    Via the analysis of a cross-section of episodes from Russell T. Davies’s era of the revived BBC Science Fiction television series Doctor Who (2005–2010), this paper demonstrates that the programme utilises representations of the viewer’s everyday lifeworld to figure a posthuman rhetoric. Through the viewer’s in-phenomenal interaction with its representation of the mundane, the show emphasises the already significantly posthuman nature of the technologically saturated lifeworld of the contemporary individual. It challenges Darko Suvin’s notion of cognitive estrangement, which fails to describe the show’s Science Fictional discourse, and instead proposes the alternate mechanism of cognitive engagement. This inquiry, therefore, reappraises the thematic concerns of the show during the years when Russell T. Davies served as the programme’s showrunner, revealing Doctor Who’s emphasis upon the everyday (post)human lifeworld. It concludes that the show refutes technocentric ideologies, and thus rigorously demonstrates the consonance between the (post)human present and posthuman future

    An Interesting Typo in Kim Stanley Robinson's The Gold Coast

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    One typo in Kim Stanley Robinson’s 1988 novel The Gold Coast is so prominent as to merit consideration. Nevertheless, there is no evidence that it has ever come to the attention of readers before now
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