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This study is an investigation of Japanese university English language teachers' self-efficacy beliefs. Research has established that teachers' self-efficacy has considerable influence on a wide variety of teaching practices. However, in the English as a Foreign Language domain, and more specifically at the university level in Japan, self-efficacy beliefs have hardly ever been examined. The purpose of this study was to investigate teachers' self-efficacy beliefs based on the teachers' native language, teaching experience, contract and tenured status, and gender. Furthermore, the sources of these beliefs, how they are strengthened, and how they are challenged were also explored. In order to provide answers to these questions, the Japanese University Language Teachers' Efficacy Beliefs Scale (JULTEBS), a new instrument measuring language teacher self-efficacy was validated using the Rasch rating-scale model as well as a confirmatory factor analysis. A triangulation strategy mixed-method design was employed in which the collection and analysis of data from the quantitative survey was completed in addition to the collection and analysis of data from qualitative open-ended interviews. A profile analysis, a special application of a MANOVA, was conducted to check the hypotheses for parallelism, levelness, and flatness of the self-efficacy scores among the various groups of respondents. The four self-efficacy variables that were measured were Efficacy in Student Engagement, Efficacy in Instructional Strategies, Efficacy in Classroom Management, and Efficacy in Dealing with Superiors. Semi-structured interviews were also employed to help determine what potentially strengthens and weakens the self-efficacy beliefs of English language teachers. The results showed that native English language teachers perceived themselves to be more efficacious than Japanese English teachers across all four self-efficacy variables. Additionally, more experienced teachers exhibited higher self-efficacy beliefs than less experienced teachers. Tenured teachers and limited-term contract teachers showed similar levels of self-efficacy on all variables except for Efficacy in Dealing with Superiors, where tenured teachers rated themselves higher than contract teachers. Furthermore, male and female teachers showed no statistically significant differences across all four self-efficacy variables. Finally, four themes (Autonomy, Colleagues, Money, and Students) emerged as qualities that could support teachers' self-efficacy, whereas three themes (Administration, Students, and Limited-term Contracts) surfaced as qualities that could weaken teachers' self-efficacy. The findings of this study not only highlight the importance of teacher self-efficacy, but also provide valuable insights into the beliefs of English language teachers, as well as the current state of affairs for these teachers at Japanese universities. / Applied Linguistics

The National Aeronautics and Space Administration (NASA) is considering the use of iodine for disinfection of recycled wastewater and potable water in the International Space Station (ISS). Like Chlorine and other halogen compounds, iodine can form disinfection by-products (DBPs) in the presence of organic compounds. Recycled wastewater sources proposed for reuse in the space station include laundry, urine, and humidity condensate. These contain large concentrations of iodine-demanding compounds, including phenol (Barkely et al., 1992). Therefore, the potential for the formation of iodine disinfection by-products (IDBPs) is of concern. Based on the characteristics of the ISS recycled wastewater sources and potable water treatment system, a series of experiments was designed to evaluate the formation of IDBPs under different experimental conditions. Studies were conducted by reacting various concentrations of iodine with phenol at pH 5.5 and 8.0.Iodine concentrations of 10 and 50 mg/L and phenol concentrations of 5 and 50 mg/L were used. Reactions were monitored for up to 32 days for the formation of IDBPs. All reactions were maintained at 20 C in dark. High Performance Liquid Chromatography (HPLC) and Gas Chromatography/Mass Spectrometry (GC/MS) were used for identification and quantitative analysis of phenolic compounds. Spectrophotometry was used to monitor the iodine concentrations. Falvor Profile analysis (FPA) method was used to evaluate the odor characteristics of the phenolic compounds. Reactions of iodine with phenol resulted in the formation of the following by-products: 2-iodophenol, 4-iodophenol, diiodophenols, and 2,4,6-triiodophenol. Most reaction conditions studied resulted in the formation of all or some of the specified iodophenols. The initial mass ratio of iodine to phenol was the major determining factor in the concentrations and types of by-products formed. The IDBPs were formed within one hour after initiation of the reactions. Extended reaction times did not lead to significant increases in the concentration of IDBPs. Under most reaction conditions, mono-subsituted phenols were detected at significantly higher concentrations than di-substituted phenolic compounds; triiodophenol was the major by-product when iodine:phenol mass ratio was 10:1. The greatest number of IDBPs were formed when reaction solutions consisted of 1:1 mass ratio of iodine to phenol. FPA panel indicated the odor threshold concentrations for phenol, 2-iodophenol, and 4-iodophenol were 5 mg/L, less than 1 ug/L, and 1 mg/L respectively. The most common odor descriptions for all these compounds were "chemical", "phenolic", and "medicinal". / Master of Science

Individuals with Social Anxiety Disorder (SAD) are typically perceived by others as shy, submissive, or risk-averse. However, recent work has identified an understudied subtype within SAD characterized by high levels of anger and high-risk or novelty-seeking impulsive behaviors. Interestingly, this subtype bears conceptual similarities with prior accounts of vulnerable narcissism. For example, both are associated with concerns regarding self-presentation and how they are perceived by others. The angry-impulsive subtype and vulnerable narcissism may further share similar etiologic origins and similar associations with self-reported anger, impulsivity, and anxiety-related characteristics. However, despite these key similarities no prior work has systematically evaluated the common and potentially distinguishing factors within and between these conceptually similar but diagnostically distinct groups. For example, cognitive features such as fear of negative evaluation and interpersonal rivalry could be distinguishing features of SAD and vulnerable narcissism, although the utility of these distinguishing features to clarify the differential diagnosis remains unknown. Accordingly, the purpose of this study was to utilize a person-centered analytic approach (latent profile analysis; LPA) to empirically establish whether vulnerable narcissistic traits exist within high anger, risk-prone individuals who are also socially anxious, or alternatively whether specific features of each disorder can be used to disambiguate them empirically. Results of this work supported the existence of the angry impulsive socially anxious subtype and supported a relationship between that group and vulnerable narcissistic traits. These findings have implications for treatment selection among affected individuals and may further clarify why prior work evaluating interventions for adults with SAD and angry impulsive features has been met with only limited success. / M.S. / Individuals with Social Anxiety Disorder (SAD) are typically perceived by others as shy, submissive, or risk-averse. However, recent work has identified an understudied subtype within SAD characterized by high levels of anger and high-risk or novelty-seeking impulsive behaviors. Interestingly, this subtype has conceptual similarities with descriptions of vulnerable narcissism. For example, both are associated with concerns regarding self-presentation and how they are perceived by others. The angry-impulsive subtype and vulnerable narcissism may further share similar origins and similar associations with self-reported anger, impulsivity, and anxiety-related characteristics. However, despite these key similarities no prior work has evaluated the common and potentially distinctive factors within and between these distinct groups. For example, features such as fear of negative evaluation and interpersonal rivalry could be distinguishing features of SAD and vulnerable narcissism, although the utility of these differentiating features to clarify the differential diagnosis is unknown. Accordingly, the purpose of this study was to utilize a person-centered analytic approach (latent profile analysis; LPA) to establish whether vulnerable narcissistic traits exist within high anger, risk-prone individuals who are also socially anxious, or whether specific features of each disorder can be used to differentiate them. Results of this work supported the existence of the angry impulsive socially anxious subtype and supported a relationship between that group and vulnerable narcissistic traits. These findings have implications for treatment selection among affected individuals and may further clarify why prior work evaluating interventions for adults with SAD and angry impulsive features has been met with only limited success.

The Ethiopian Plateau is one of the few tectonically-active regions on Earth that is situated in continental rift zones. About 1.6 km deep gorge of the Nile was carved by the Blue Nile River on the Ethiopian Plateau, as the plateau has been experiencing continuous uplift and exhumation in the Cenozoic. Here, we used quantitative analysis of longitudinal rive-profile forms and parameters (knickpoint and normalized steepness-index ksn) of the Blue Nile tributaries to tease out regional tectonic signals. 244 knickpoints were examined in the tributaries, majority (>80%) of which are unassociated with lithology or geological structures. Knickpoint distribution throughout the plateau reveals three incision phases. The novel approach of correlation of ksn with mantle tomography suggests that higher and lower ksn values occur above low-velocity and high-velocity zones, respectively, indicating that thermal upwelling beneath the plateau linked to Afar mantle plume largely controls the uplift thus incision of the plateau.

Neste estudo 60 cepas de Aeromonas, 15 A. hydrophila, 15 A. caviae, 15 A. sobria e 15 A. jandaei, isoladas de 5 diferentes pontos do reservatório de Guarapiranga, São Paulo, e previamente testada quanto à produção de fatores de virulência, acúmulo de fluído em alça ligada e hemólise em ágar sangue, foram submetidas a ribotipagem e a análise do perfil plasmidial. Cada cepa apresentou um perfil de ribotipagem diferente tendo-se observado para as espécies A. hydrophila e A. caviae a diferenciação em 3 agrupamentos, e A. sobria e A. jandaei dois agrupamentos cada. A análise do perfil plasmidial demonstrou que 13,4 por cento das A. hydrophila apresentaram um ou no máximo 2 plasmídios, enquanto 33,3 por cento das A. sobria e 53,3 por cento das A. jandaei apresentaram de 1 a 6 plasmídios para cada espécie; A. caviae não apresentou cepas contendo plasmídios. Não foi observada correlação entre a presença de plasmídios e a produção de fatores de virulência pelas cepas estudadas. A ribotipagem demonstrou haver um polimorfismo genômico dentro de uma mesma espécie de Aeromollas e, ainda, diferenciou cepas isoladas de um mesmo ponto de amostragem. Estas metodologias, ribotipagem e análise do perfil plasmidial, apresentam em geral características que são complementares, demonstrando ser ferramentas importantes a serem empregadas, tanto em estudos epidemiológicos como ecológicos. / In this work 60 Aeromonas strains, 15 A. hydrophila, 15 A. caviae, 15 A. sobria and 15 A. jandaei isolated from 5 different points of Guarapiranga Dam, São Paulo, and previously tested for virulence factors production (ileal loop assay and hemolysis on blood agar) were submitted to ribotyping and plasmidial profiles analysis. Each strain showed a different ribopattern and there were observed that for A. hydrophila and A. caviae each specie were grouped in 3 ribotypes, A. sobria and A. jandaei in 2 ribotype each. Plasmidial profiles analysis demonstrated that 13,4 per cent af A. hydrophila had at least one but no more than 2 plasmids, 33,3 per cent of A. sobria and 53,3 per cent af A. jandaei had from one to 6 plasmids each, and A. caviae didn\'t show to have any plasmids. There were not observed correlation between presence of plasmids and virulence factor production. Ribotyping showed that there are genomic polymorphism within the same Aeromonas specie and differentiate strains that were isolated from the same sample point, indicating that those methodologies have in general characteristics that are complementary and are important tools to be used either in epidemiological or ecological studies.

The present PhD project was carried out as part of an EPSRC Leadership Fellowship for the study of irradiation damage in zirconium alloys. The National Nuclear Laboratory (NNL) directly supported the project in terms of additional funding and insightful discussions regarding irradiation damage in zirconium alloys. The research carried out within the project aims to gain a better understanding of both a- and c-loops, formed during irradiation damage in zirconium alloys. A range of techniques have been utilised to assess the morphology and density of the dislocation loops after proton-irradiations. These techniques include transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS) and line profile analysis (LPA) using synchrotron X-ray diffraction (SXRD) profiles and analysing the data utilizing the extended convolutional multiple whole profile (CMWP) analysis software. The effect of experimental conditions on dislocation loop formation and stability of a-loops during post-irradiation annealing have also been investigated. Proton-irradiations were carried out on the commercial alloys Zircaloy-2, Optimized ZIRLOTM and also on binary Zr-0.1Fe and Zr-0.6Fe alloys. A mechanism has been proposed as to the effect of Fe redistribution on dislocation loop formation. By comparing proton-irradiated Zr-0.1Fe and Zircaloy-2 alloys it was possible to investigate the effect of increased amount of Fe redistribution, which occurs from secondary phase particle (SSP) dissolution, on the microstructural features that develop during irradiation. Zircaloy-2 has a higher density of SPPs and these are more homogenously distributed throughout the matrix in comparison to the Zr3Fe SPPs found in the Zr-0.1Fe alloy. It was found that Fe redistribution facilitates the formation of Fe-rich nano-precipitation. Bright-field STEM imaging has been used to image a- and c-loops and it was found that Zircaloy-2 had a lower dislocation line density compared to Zr-0.1Fe for both types of loops at similar damage levels. Therefore it has been proposed that Fe redistributed from SPPs precipitates in the matrix and the subsequent irradiation-induced precipitates act as annihilation sites for point defects; therefore preventing the formation of new dislocation loops and the growth of existing loops. In order to assess the effect of proton-irradiation temperature on a-loops, Zircaloy-2 and Optimized ZIRLOTM were proton irradiated to 2.3 dpa at 280°C, 350°C and 450°C. It was found that the a-loop density dropped in both alloys as irradiation temperature was increased and the a-loop diameter decreased. The changes in the density and size were more dramatic in Zircaloy-2 and this was explained by the presence of fine irradiation induced clustering of Nb seen in Optimized ZIRLOTM. These trends were calculated from both STEM imaging and CMWP, highlighting the suitability of using CMWP to investigate irradiation-induced dislocations. Finally the stability of the a-loops in proton-irradiated Zr-Fe binary alloys were investigated using novel in-situ SXRD and TEM annealing experiments. From CMWP analysis of the profiles generated during the in-situ annealing of a Zr-0.6Fe 3 dpa sample it was shown that the majority of the annealing takes place between 300°C-400°C. This was highlighted by a period of no change in the dislocation density up to 300°C, after which the density drops dramatically. In-situ annealing of a 1.5 dpa Zr-0.1Fe sample in the TEM allowed for the observation of a-loop gliding along prismatic planes enabling the annealing process taking place between 280°C-450°C, i.e. a similar temperature range at which SXRD analysis indicates the greatest level of annealing.