Conditions Variable: Assemblage Theory and Systems Theory in Creative Practice

This dissertation will situate the twenty-first century phenomenon of Assemblage theory, which originated in the field of philosophy, within the last 100 years of creative practice. Drawing from Manuel DeLanda’s application of Assemblage theory, I will devise a means to discuss creative practice without reducing its analysis to ‘structured fields’ or ‘closed systems’. Rather, comparisons will be made between a system and an assemblage to illustrate how the two part ways, and find common ground. To better understand the way in which systems have been applied in artistic practice, an investigation of two major twentieth-century paradigm shifts will be examined. The first example is the Bauhaus school and its post-European formal offshoot in America, the New Bauhaus, and how it adapted its European predecessor’s principles of design. The second is the technological revolution, which engendered Jack Burnham’s Systems Esthetics, Experiments in Art and Technology (EAT) and the Center for Advanced Visual Studies (CAVS) at the Massachusetts Institute of Technology (MIT). In light of these developments, I argue that a flexible, descriptive, Assemblage theory is needed to better articulate how art (the work and its making) functions within an expanded field of practice as it now exists. The adaptable and transmutable nature of Assemblage theory is also illustrated through example. In the process this dissertation will offer new ways to articulate and understand creative practice and propose a new strategy for art to be understood. Finally, I will employ Assemblage theory to analyze my own creative endeavours

Carrier-controlled ferromagnetism in SrTiO3

Magnetotransport and superconducting properties are investigated for uniformly La-doped SrTiO3 films and GdTiO3/SrTiO3 heterostructures, respectively. GdTiO3/SrTiO3 interfaces exhibit a high-density two-dimensional electron gas on the SrTiO3-side of the interface, while for the SrTiO3 films carriers are provided by the dopant atoms. Both types of samples exhibit ferromagnetism at low temperatures, as evidenced by a hysteresis in the magnetoresistance. For the uniformly doped SrTiO3 films, the Curie temperature is found to increase with doping and to coexist with superconductivity for carrier concentrations on the high-density side of the superconducting dome. The Curie temperature of the GdTiO3/SrTiO3 heterostructures scales with the thickness of the SrTiO3 quantum well. The results are used to construct a stability diagram for the ferromagnetic and superconducting phases of SrTiO3.Comment: Revised version that is closer to the published version; Fig. 2 correcte

MR Spectroscopic Imaging of Peripheral Zone in Prostate Cancer Using a 3T MRI Scanner: Endorectal versus External Phased Array Coils.

Magnetic resonance spectroscopic imaging (MRSI) detects alterations in major prostate metabolites, such as citrate (Cit), creatine (Cr), and choline (Ch). We evaluated the sensitivity and accuracy of three-dimensional MRSI of prostate using an endorectal compared to an external phased array "receive" coil on a 3T MRI scanner. Eighteen patients with prostate cancer (PCa) who underwent endorectal MR imaging and proton (1H) MRSI were included in this study. Immediately after the endorectal MRSI scan, the PCa patients were scanned with the external phased array coil. The endorectal coil-detected metabolite ratio [(Ch+Cr)/Cit] was significantly higher in cancer locations (1.667 ± 0.663) compared to non-cancer locations (0.978 ± 0.420) (P < 0.001). Similarly, for the external phased array, the ratio was significantly higher in cancer locations (1.070 ± 0.525) compared to non-cancer locations (0.521 ± 0.310) (P < 0.001). The sensitivity and accuracy of cancer detection were 81% and 78% using the endorectal 'receive' coil, and 69% and 75%, respectively using the external phased array 'receive' coil

The Social Network and Attachment Bases of Loneliness

This thesis tests Robert S. Weiss\u27s 1973 theory of loneliness, which claims two types of loneliness: emotional and social. Emotional loneliness is the affective reaction to the absence of a close attachment bond. Social loneliness stems from inadequate integration into a social network. Undergraduate residents of a university dormitory completed questionnaires on loneliness, attachment, personality, and relationships with other dorm residents. Patterns of relational ties among participants were evaluated using social network analysis, specifically density, tie strength, and four forms of centrality. Results reveal that, while controlling for neuroticism, the network measure of outdegree and the two attachment dimensions accounted for more than half the variance in loneliness, R = .73. None of the three predictors intercorrelated significantly. A portion of loneliness is derived from one\u27s internal attachment security and a separate portion is derived from the external features of one\u27s social network integration

First Evidence of Circumstellar Disks around Blue Straggler Stars

We present an analysis of optical HST/STIS and HST/FOS spectroscopy of 6 blue stragglers found in the globular clusters M3, NGC6752 and NGC6397. These stars are a subsample of a set of ~50 blue stragglers and stars above the main sequence turn-off in four globular clusters which will be presented in an forthcoming paper. All but the 6 stars presented here can be well fitted with non-LTE model atmospheres. The 6 misfits, on the other hand, possess Balmer jumps which are too large for the effective temperatures implied by their Paschen continua. We find that our data for these stars are consistent with models only if we account for extra absorption of stellar Balmer photons by an ionized circumstellar disk. Column densities of HI and CaII are derived as are the the disks' thicknesses. This is the first time that a circumstellar disk is detected around blue stragglers. The presence of magnetically-locked disks attached to the stars has been suggested as a mechanism to lose the large angular momentum imparted by the collision event at the birth of these stars. The disks implied by our study might not be massive enough to constitute such an angular momentum sink, but they could be the leftovers of once larger disks.Comment: Accepted by ApJ Letters 10 pages, 2 figure

Shadows on the Cave Wall: The Cognitive Accuracy of Social Network Perception

How accurately people perceive interpersonal relationships, both among others and with themselves, forms the basis of social inferences about the structure of the social environment and one\u27s place in it. Six hypotheses were tested using the cognitive social structures method from social network analysis with five independent but similar student networks from two universities. Results from all networks were meta-analyzed. Participants gave both their self-reported friendship ratings for every alter in their group and also gave their perceptions of the ratings the other member would give. Perception ratings were correlated to self-report ratings for each participant as a measure of accuracy of social network perception. Participants perceived more structural balance than was present in self-reports in four out of five networks and in the meta-analysis, providing evidence for the balance schema. Attachment anxiety correlated negatively with accuracy for one of the networks but was not statistically significant in the meta-analysis. Being located in a tightly-knit subgroup reduced overall network accuracy, consistent with the strength of weak ties (SWT) theory, in one network but not in the meta-analysis. In only one network did participants overestimated how central they were, though not significantly in the meta-analysis. Being more central in the social network was unrelated to accuracy, as was the mean social network distance between perceiver and targets. Results provide meta-analytic support for the balance schema and limited support for attachment, SWT, and egocentric bias in social network perception

Social and family characteristics of Hispanics with epilepsy

AbstractThe purpose of this study is to determine how acculturation, social support, family emotional involvement, perceived family criticism and stigma are associated with epilepsy self-efficacy and depression. A principal components analysis (PCA) was used to describe the salience of these characteristics within a sample of Hispanics with epilepsy.A total of 50 Hispanic adults of Mexican descent identified in our Epilepsy Clinic participated in this study. The PCA identified four distinct types, two were relatively culture-free, and two were distinctly culturally oriented. The first non-culture affiliated type described a well-adjusted group of individuals that tended to be males with moderate self-efficacy, who received social support, and who were unlikely to have depression or feel stigmatized. The second non-culture affiliated type described a dimension in which family emotional involvement tended to co-occur with perceived criticism. The Anglo-oriented group had a family environment that did not appear to criticize the individual with epilepsy and had good self-efficacy. The Mexican-oriented group had high self-efficacy and was unlikely to have depression. Results suggest that acculturation variables must be taken into consideration among ethnic groups because social, psychological and acculturation variables interact in complex ways. Additionally, it is clear that a diagnosis of epilepsy does not automatically lead to poor quality of life, stigma, or depression