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11	Exploring the internal configuration of the cycloid personality : a Rorschach comprehensive system Daws, Loray 16 June 2012 (has links) Exploring the cycloid temperament has been attempted throughout the ages by various pioneers in psychiatry, psychology and psychoanalysis. Contemporary psychiatric approaches have estimated that cycloid pathology, most evident as Bipolar Disorder, accounts for more than 1% of the population and is seen as the sixth leading cause of all illnesses. Despite the latter it is remains a desperately understudied area psychologically. Theoretically, BD is known for (1) its complex epidemiology, (2) costly treatment, (3) occupational impairment; (4) its negative interpersonal implications, (5) negative domestic effects, (6) forensic consequences, (7) death due to suicide and accidents, (8) cost in treatment, and finally, and most importantly from a humanistic perspective, (9) BD's diminished quality of life. Given the various realities faced by those suffering from Bipolar disorder the current study aimed at describing, through the use of the Rorschach Comprehensive system (CS), the self and object-representations, as well as the affect experiences of fifty, predominantly Bipolar I inpatients. The patients were selected through opportunity sampling at two provincial psychiatric hospitals in South Africa and included Caucasian, African and Colored respondents. All protocols were administered and scored by trained CS clinicians and re-scored by both the author and supervisor. Fifteen protocols were thereafter randomly assigned to three inter-raters and a high level of inter-rater reliability seemed evident. Given various inherent limitations of the study, that is, (a) a study of limited scope, (b) the heterogeneous nature of the sample and the reliance on opportunity sampling, (c) the small sample size, (d) lack of a control group, and (d) the focus of the study as exploratory-descriptive in nature, basic descriptive statistic were relied upon. Despite the various limitations, the results obtained seemed to hint at the possibility of a Neglected Self, characterised by difficulties in modulating affect in moderation, lack of self-esteem and positive self-regard, difficulties in introspection and self-inspecting behaviour, a general lack of interpersonal comfort and feelings of threat, as well as affectional and representational constriction. The presence of impaired self-regulation and reflection, possible perceptual differences in sensory-affective reactivity and processing, as well as difficulties in representational elaboration and differentiation needs further research and comparison to other psychiatric disorders. Basic therapeutic inferences were also discussed that may support those who treat cycloid patients. / Thesis (PhD)--University of Pretoria, 2012. / Psychology / unrestricted Bipolar disorder object-representation Object relations Rorschach comprehensive system Cycloid personality Viewing the self Affect Self-representation Internal configuration Descriptive statistics Self-representation Interpersonal perception Neglected-self UCTD
12	Theoretical investigation of size effects in multiferroic nanoparticles Allen, Marc Alexander 05 August 2020 (has links) Over the last two decades, great progress has been made in the understanding of multiferroic materials, ones where multiple long-range orders simultaneously exist. However, much of the research has focused on bulk systems. If these materials are to be incorporated into devices, they would not be in bulk form, but would be miniaturized, such as in nanoparticle form. Accordingly, a better understanding of multiferroic nanoparticles is necessary. This manuscript examines the multiferroic phase diagram of multiferroic nanoparticles related to system size and surface-induced magnetic anisotropy. There is a particular focus on bismuth ferrite, the room-temperature antiferromagnetic-ferroelectric multiferroic. Theoretical results will be presented which show that at certain sizes, a bistability develops in the cycloidal wavevector. This implies bistability in the ferroelectric and magnetic moments of the nanoparticles. This novel magnetoelectric bistability may be of use in the creation of an electrically-written, magnetically-read memory element. / Graduate bismuth ferrite bfo nanoparticle nanomagnetism multiferroics optimization magnetism ferroelectric bistability anisotropy surface anisotropy weak ferromagnetism antiferromagnetism Dzyaloshinskii-Moriya interaction cycloid numerical methods condensed matter solid state physics magnetoelectric effect room-temperature multiferroic superexchange magnetic memory spin canting g-type antiferromagnetism Heisenberg Hamiltonian Nelder-Mead L-BFGS-B mathematica python ferroelectricity perovskite antiferromagnet bifeo3 rhombohedral pseudocubic r3c trigonal physics magnetic memory electrically-written memory curie temperature néel temperature materials science

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Exploring the internal configuration of the cycloid personality : a Rorschach comprehensive system

Theoretical investigation of size effects in multiferroic nanoparticles