324 research outputs found

    The Eye in Motion: Mid-Victorian Fiction and Moving-Image Technologies

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    This thesis reads selected works of fiction by three mid-Victorian writers (Charlotte Brontë, Charles Dickens, and George Eliot) alongside contemporaneous innovations and developments in moving-image technologies, or what have been referred to by historians of film as ‘pre-cinematic devices’. It looks specifically at the moving panorama, diorama, dissolving magic lantern slides, the kaleidoscope, and persistence of vision devices such as the phenakistiscope and zoetrope, and ranges across scientific writing, journalism, letters, and paintings to demonstrate the scope and popularity of visual motion devices. By exploring this history of optical technologies I show how their display, mechanism, and manual operation contributed to a broader cultural and literary interest in the phenomenological experience of animation, decades before the establishment of cinematography as an industry, technology, and viewing practice. Through a close reading of a range of mid-Victorian novels, this thesis identifies and analyses the literary use of language closely associated with moving-image technologies to argue that the Victorian literary imagination reflected upon, drew from, and incorporated reference to visual and technological animation many decades earlier than critics, focusing usually on early twentieth-century cinema and modernist literature, have allowed. It develops current scholarship on Victorian visual culture and optical technologies by a close reading of the language of moving-image devices—found in advertisements, reviews, and descriptions of their physiological operation and spectacle—alongside the choices Victorian authors made to describe precisely how their characters perceived, how they imagined, remembered, and mentally relived particular scenes and images, and how the readers of their texts were encouraged to imaginatively ‘see’ the animated unfolding of the plot and the material dimensionality of its world through a shared understanding of this language of moving images

    #BlackLivesMatter: creating an online discursive structure

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    The Black Lives Matter movement started in 2013 as a response to the death of 17-year-old Trayvon Martin and the acquittal of his killer, George Zimmerman. What started out as a hashtag on a social networking site quickly grew into a large offline grassroots movement, with no formal hierarchy and with decentralized chapters spread across the United States. By using social media platforms such as Twitter, local BLM chapters can respond to the incessant violence against Black people and can contenst Black stereotypes appearing in the news media. This paper is about how the media frame and represent Black people, and how the BLM movement represents itself. There is exigency for this study because few academic studies explain how the Black Lives Matter movement\u27s social media use challenges negative stereotypes about Black people (Langford & Speight, 2015). To address these gaps in the literature, this paper demonstrates how the Chicago, Los Angeles, and Mineeapolis BLM chapters\u27 Twitter pages constitute a discursive structure that could potentially counter the prevelant Black criminality stereotype perpetuated by mainstream media narratives. My study demonstrates how the BLM movement\u27s use of Twitter constitutes a discursive structure. In this study, I analyzed tweets appearing in these three chapters\u27 Twitter accounts during the month of December 2015, the month the Black Xmas protest occured. I followed van Dijk (2001) and Shirazi\u27s (2013) approaches to critical discourse analysis to understand how the chapters\u27 use of Twitter constitutes a discursive structure. These two approaches allow me to study the way social power abuse, dominance, and inequality are enacted, reproduced, and resisted by text and talk in the social and political context (van Dijk, 2001, p. 352) on social media. I find that these chapters represented the movement and its supporters in a manner that challenges the Black criminality stereotype. Through its use of social media, the Black Lives Matter movement has helped deconstruct stereotypes and challenged media hegemony. With this study, I aim to bring about social change by understanding how the movement\u27s use of Twitter constitutes a discursive structure, which represents Black people in a new way, and by doing so to affirm that Black lives matter in a world in which it seems they do not

    Epigenetic marks as the link between environment and development: examination of the associations between attachment, socioeconomic status, and methylation of the SLC6A4 gene.

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    BackgroundEpigenetic processes act as a link between environment and individual development. This pilot study examined the association between socioeconomic status (SES), attachment, and methylation of the promoter region of the serotonin transporter gene (SLC6A4).MethodsAttachment classification and SLC6A4 methylation was determined in 100 late adolescents. We hypothesized that (1) SES would interact with methylation to predict higher unresolved loss (UL) or trauma scores on the Adult Attachment Interview; (2) across SES, participants with unresolved attachment would have lower levels of methylation than organized or secure participants; and (3) within the unresolved classification, SES would predict methylation.ResultsResults showed that lower methylation and low-SES were associated with higher UL, and higher methylation and low-SES were associated with higher unresolved trauma. Across SES, unresolved participants had lower levels of methylation than organized participants. Within the unresolved category, low-SES unresolved participants had higher levels of methylation than mid/upper-SES participants. SES was unrelated to methylation within the secure and organized categories.ConclusionsThese results suggest that the quality of attachment relationships may impact epigenetic processes

    Distribution and Diversity of Archaeal and Bacterial Ammonia Oxidizers in Salt Marsh Sediments

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    Diversity and abundance of ammonia-oxidizing Betaproteobacteria (β-AOB) and archaea (AOA) were investigated in a New England salt marsh at sites dominated by short or tall Spartina alterniflora (SAS and SAT sites, respectively) or Spartina patens (SP site). AOA amoA gene richness was higher than β-AOB amoA richness at SAT and SP, but AOA and β-AOB richness were similar at SAS. β-AOB amoA clone libraries were composed exclusively of Nitrosospira-like amoA genes. AOA amoA genes at SAT and SP were equally distributed between the water column/sediment and soil/sediment clades, while AOA amoA sequences at SAS were primarily affiliated with the water column/sediment clade. At all three site types, AOA were always more abundant than β-AOB based on quantitative PCR of amoA genes. At some sites, we detected 109 AOA amoA gene copies g of sediment−1. Ratios of AOA to β-AOB varied over 2 orders of magnitude among sites and sampling dates. Nevertheless, abundances of AOA and β-AOB amoA genes were highly correlated. Abundance of 16S rRNA genes affiliated with Nitrosopumilus maritimus, Crenarchaeota group I.1b, and pSL12 were positively correlated with AOA amoA abundance, but ratios of amoA to 16S rRNA genes varied among sites. We also observed a significant effect of pH on AOA abundance and a significant salinity effect on both AOA and β-ΑΟΒ abundance. Our results expand the distribution of AOA to salt marshes, and the high numbers of AOA at some sites suggest that salt marsh sediments serve as an important habitat for AOA

    Layered Social Network Analysis Reveals Complex Relationships in Kindergarteners.

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    The interplay between individuals forms building blocks for social structure. Here, we examine the structure of behavioral interactions among kindergarten classroom with a hierarchy-neutral approach to examine all possible underlying patterns in the formation of layered networks of "reciprocal" interactions. To understand how these layers are coordinated, we used a layered motif approach. Our dual layered motif analysis can therefore be thought of as the dynamics of smaller groups that tile to create the group structure, or alternatively they provide information on what the average child would do in a given local social environment. When we examine the regulated motifs in layered networks, we find that transitivity is at least partially involved in the formation of these layered network structures. We also found complex combinations of the expected reciprocal interactions. The mechanisms used to understand social networks of kindergarten children here are also applicable on a more general scale to any group of individuals where interactions and identities can be readily observed and scored

    Exploring levels of student-athlete burnout at two Canadian universities

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    The purpose of the current study was to examine the levels of burnout among student-athletes at two Canadian universities and to investigate whether there were significant differences related to gender, sport, year of university sport participation, academic year, and academic program. Burnout was measured by administering Raedeke and Smith’s (2001) Athlete Burnout Questionnaire to 145 student-athletes from various sports. Overall, 1.4% of the student-athletes had elevated burnout scores on all three subscales, and 17% scored high on two of the three subscales. No significant differences emerged with regards to year of varsity sport participation, academic year, or program. However, women had significantly higher levels of emotional and physical exhaustion than men. Significant differences also emerged in relation to levels of emotional and physical exhaustion, and of sport devaluation, when comparing various sports.  Le but de cette étude était d’évaluer le niveau d’épuisement d’étudiants athlètes fréquentant deux universités canadiennes et de déterminer s’il y avait des différences significatives liées au sexe, au sport, au nombre d’années de participation au sport universitaire, ainsi qu’à l’année universitaire et au programme d’étude. L’épuisement a été mesuré en distribuant le « Athlete Burnout Questionnaire » (Raedeke & Smith, 2001) à 145 étudiants athlètes universitaires de différentes disciplines sportives. En somme, 1,4 % des participants ont affiché des scores élevés sur chacune des trois sous-échelles et 17 % ont fait de même sur deux d’entre elles. Aucune différence marquée n’a été identifiée quant au nombre d’années de participation au sport universitaire, ni à l’année universitaire ou au type de programme d’étude. Cependant, les femmes ont affiché un niveau d’épuisement émotif et physique significativement plus élevé que celui des hommes. En outre, on a noté des différences marquées en comparant les sports entre eux en ce qui a trait au niveau d’épuisement émotif et physique et au niveau de dévalorisation des disciplines

    IMPLEMENTATION OF AN EDUCATIONAL INTERVENTION TO INCREASE NURSES’ KNOWLEDGE AND SELF-CONFIDENCE WITH FAMILY PRESENCE DURING PEDIATRIC RESUSCITATION

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    Background: Despite the recommendations from many professional organizations, family presence during resuscitation is not widely practice, including in pediatric intensive care units. Previous research suggests that nurses’ perceptions of risk versus benefit and their level of self-confidence are barriers to facilitating the practice of family presence during resuscitation (FPDR).Purpose: To evaluate the implementation of an evidenced-based educational intervention for pediatric intensive care nurses to determine if education and training increases nurses’ knowledge and self-confidence.Methods: This study utilized a quasi-experimental design with a pre-test and a post-test administered before and after implementation of a 2-hour educational session addressing family presence during pediatric resuscitation. The primary outcome measures were nurses’ attitudes, level of self-confidence, and intent to facilitate family presence.Results: Nurses reported a significant increase in their level of self-confidence (FPS-CS pre-survey mean score of 4.05 and post-survey mean score of 4.46) and an increase in positive perception of benefits (FPR-BS pre-survey mean score of 3.74 and post-survey mean score of 4.32) after attending an evidence based education session. It can be concluded that a formal education session can be instrumental in influencing nurses’ perceptions and self-reported confidence when facilitating FPDR.Doctor of Nursing Practic

    Charge-Mediated Recognition of N-Terminal Tryptophan in Aqueous Solution by a Synthetic Host

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    The molecular recognition of peptides and proteins in aqueous solution by designed molecules remains an elusive goal with broad implications for basic biochemical research and for sensors and separations technologies. This paper describes the recognition of N-terminal tryptophan in aqueous solution by the synthetic host cucurbit[8]uril (Q8). Q8 is known to form 1:1:1 heteroternary complexes with methyl viologen (MV) and a second aromatic guest. Here, the complexes of Q8·MV with (i) the four natural aromatic α-amino acids, (ii) four singly charged tryptophan derivatives, and (iii) four tryptophan-containing tripeptides were characterized by isothermal titration calorimetry, mass spectrometry, and UV−visible, fluorescence, and 1H NMR spectroscopy. We find that Q8·MV binds Trp−Gly−Gly with high affinity (Ka = 1.3 × 105 M-1), with 6-fold specificity over Gly−Trp−Gly, and with 40-fold specificity over Gly−Gly−Trp. Analysis of the nine indole-containing compounds suggests that peptide recognition is mediated by the electrostatic charge(s) proximal to the indole, and that the mode of binding is consistent for these compounds. Complex formation is accompanied by the growth of a visible charge-transfer band and the quenching of indole fluorescence. These optical properties, combined with the stability and selectivity of this system, are promising for applications in sensing and separating specific peptides
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