The company she keeps : The social and interpersonal construction of girls same sex friendships

This thesis begins a critical analysis of girls' 'private' interpersonal and social relations as they are enacted within two school settings. It is the study of these marginal subordinated worlds productivity of forms of femininity which provides the main narrative of this project. I seek to understand these processes of (best) friendship construction through a feminist multi-disciplinary frame, drawing upon cultural studies, psychoanalysis and accounts of gender politics. I argue that the investments girls bring to their homosocial alliances and boundary drawing narry a psychological compulsion which is complexly connected to their own experiences within the mother/daughter bond as well as reflecting positively an immense social debt to the permissions girls have to be nurturant and ; negatively their own reproduction of oppressive exclusionary practices. Best friendship in particular gives girls therefore, the experience of 'monogamy' continuous of maternal/daughter identification, reminiscent of their positioning inside monopolistic forms of heterosexuality. But these subcultures also represent a subversive discontinuity to the public dominance of boys/teachers/adults in schools and to the ideologies and practices of heterosociality and heterosexuality. By taking seriously their transmission of the values of friendship in their chosen form of notes and diaries for example, I was able to access the means whereby they were able to resist their surveillance and control by those in power over them. I conclude by arguing that it is through a recognition of the valency of these indivisiblly positive and negative aspects to girls cultures that Equal Opportunities practitioners must begin if they are serious about their ambitions. Methods have to be made which enable girls to transfer their 'private' solidarities into the 'public' realm, which unquestionably demands contesting with them the causes and consequences of their implication in the divisions which also contaminate their lives and weaken them

Experimental evidence of delocalized states in random dimer superlattices

We study the electronic properties of GaAs-AlGaAs superlattices with intentional correlated disorder by means of photoluminescence and vertical dc resistance. The results are compared to those obtained in ordered and uncorrelated disordered superlattices. We report the first experimental evidence that spatial correlations inhibit localization of states in disordered low-dimensional systems, as our previous theoretical calculations suggested, in contrast to the earlier belief that all eigenstates are localized.Comment: 4 pages, 5 figures. Physical Review Letters (in press

Evidence for magnetoplasmon character of the cyclotron resonance response of a two-dimensional electron gas

Experimental results on the absolute magneto-transmission of a series of high density, high mobility GaAs quantum wells are compared with the predictions of a recent magnetoplasmon theory for values of the filling factor above 2. We show that the magnetoplasmon picture can explain the non-linear features observed in the magnetic field evolution of the cyclotron resonance energies and of the absorption oscillator strength. This provides experimental evidence that inter Landau level excitations probed by infrared spectroscopy need to be considered as many body excitations in terms of magnetoplasmons: this is especially true when interpreting the oscillator strengths of the cyclotron transitions

Narratives of teacher stress : the impact of the changing context of professional work

In our daily lives we all experience forms of stress and as humans, we are equipped with internal mechanisms to react to the phenomenon. We utilize tactics that are recognised as `fight or flight' depending upon how we perceive the threat and we employ them accordingly. However, when we are unable to meet the challenges placed upon us, when they form a barrier to our achievement and progress, we become overwhelmed and are susceptible to the detrimental effects of stress. The past two decades have witnessed rapid technological advances and we are thus connected to a global set of networks. Education has had to change in order to compete with a global market that requires new skills. Teaching and what teachers do have come under scrutiny in terms of audit to ensure that a `World-Class' education system is being delivered. As a result there has been an increase in teacher workload and the profession has become re-defined in order to meet contemporary needs. Recent research by government led bodies supports the need to address teacher workload as a major cause of stress. One result has seen the development of the Workload Agreement (2003) aimed at easing the ever-increasing demands placed upon teachers. Whether this measure will be enough to address the difficulties surrounding teaching in a post-modern society remains to be seen. This inquiry focuses on teachers who have experienced work place stress which is a widely recognised phenomenon and has its own particular features. In revealing key issues surrounding teachers and their workload this study aims to uncover the particular features of teacher stress with specific emphasis on role, role conflict, change, management issues, age and workload. Furthermore the study hopes to expose how teacher's lives are changed as a result of their encounter with stress. The harrowing nature of the participants' stress narratives compelled me to chronicle the stories and unveil the impact of their experiences upon all aspects of their lives. Employing methods associated with the case study approach, I conducted unstructured interviews with eight participants. Each person provided me with stories that are narratives of their stress experiences. The nature of this work is grounded in the qualitative paradigm and I have approached this from an interpretative stance. I believe my study confirms issues surrounding teacher workload and teacher stress merits inquiry.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Phonon-induced optical superlattice

We demonstrate the formation of a dynamic optical superlattice through the modulation of a semiconductor microcavity by stimulated acoustic phonons. The high coherent phonon population produces a folded optical dispersion relation with well-defined energy gaps and renormalized energy levels, which are accessed using reflection and diffraction experiments