405 research outputs found
Letter from J. E. Gavin to Louis C. Cramton regarding Sale of Bright Angel Trail
No full textLetter from J. E. Gavin to Louis C. Cramton regarding the Bright Angel Trail controversy, including newspaper clipping
Letter from J. E. Gavin (for Senator Hayden) to Roy W. James, Michael Hanley and H. A. Montgomery
No full textLetter from J. E. Gavin on behalf of Carl Hayden writing in regards to the insurance claims filed with the National Park
The Social Construction of the Child Sex Offender Explored by Narrative
No full textThe notion of "child sex offender" provokes aversion, but it may be that it is a social construction. We suggest that a Dominant narrative, in which child sex offenders are constructed as irredeemable, persists, despite the emergence of assumption challenging Alternative narratives. A story completion method was used to elicit themes of Dominant or Alternative narratives, theory-led thematic analysis was used to identify them. The use and analysis of narrative and free-form stories are well established in social research, but remain a novel concept in the study of offenders. The results support the persistence of the Dominant narrative with two notable exceptions. Conclusions centre on utility of the narrative method to examine offender constructions, and the pervasiveness of Dominant narratives. Key Words: Dominant and Alternative Narrative, Social Construction, Child Sex Offenders, and Thematic Analysi
Impact of scour on lateral resistance of wind turbine monopiles: An experimental study
No full textThe majority of offshore wind structures are supported on large-diameter, rigid monopile foundations. These piles may be subjected to scour due to the waves and currents that causes a loss of soil support and consequently decreases the pile capacity and system stiffness. The results of numerical models suggest that the shape of the scour hole affects the magnitude of pile capacity loss; however, there is a dearth of experimental test data that quantify this effect. This paper presents a series of centrifuge model tests on an instrumented model pile that investigates the effects of scour-hole geometry on the response of a laterally loaded pile embedded in sand. The pile instrumentation allowed load–displacement and p–y (soil reaction – displacement) curves to be derived. Three scour geometries (global, local wide, and local narrow) and three scour depths (1D, 1.5D, and 2D; where D is pile diameter) were modelled. For all three scour types, pile moment capacity decreased almost linearly with increase of scour depth. Simple empirical relations were proposed to evaluate the detrimental influence of scour on the pile moment capacity. A new method has been developed to allow designers to quantify the effect of scour-hole shape and severity of scour on the pile response.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Geo-engineerin
Lateral response of rigid monopiles subjected to cyclic loading: Centrifuge modelling
No full textIn this study, a total number of 20 centrifuge tests were carried out to investigate monopile behaviour under lateral cyclic loading. The instrumented model pile simulates an offshore wind turbine foundation with an embedment ratio of 5 installed in sand layers with two relative densities of 80% and 50%. The influence of the directional characteristic and amplitude of cyclic load on pile lateral behaviour was studied. The data analysis focused on the influence of cyclic load on the accumulation of lateral displacement and evolution of secant stiffness of the foundation system. The most damaging cyclic load type (which can cause the most accumulated pile displacement) is identified as two-way loading, and it was observed that cyclic load always increases the pile secant stiffness. A new model for the prediction of evolution of accumulated displacement and change in secant stiffness has been formulated. An example of the procedure developed is presented for a typical field monopile subjected to cyclic loading. Lastly, the performance of the new model is demonstrated and predicted results are compared with field test data. Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Geo-engineerin
The invisible men: validation, belonging, and identity development in gay males
No full textThere is relatively little research and literature on the psychosocial development of gay males. This qualitative study explores the developmental experiences of gay males, as expressed by adult gay male patients, ages 20 to 29, in psychotherapy. Three composite cases were created, drawing upon data from real psychotherapy cases from clinical training experiences, published clinical examples, and fictional details to protect patients’ confidentiality. Each of these cases is presented as one key aspect or category of gay male development: validation, belonging, and identity development. Particular attention is paid to these formative developmental experiences. Case material is analyzed qualitatively, through the method of experiential phenomenology, or phenomenology of practice, as explicated by Richards and Morse (2007), van Manen (2007), and van den Berg (1972). The lived experiences of the three cases are addressed phenomenologically. The following themes emerged: (a) dissociation, (b) hypervigilance, (c) anxiety, (d) microaggression, (e) shame, (f) true self/false self, (g) avoidance of self, and (h) invisibility. Implications for psychotherapy with gay male patients are explored and limitations of the study discussed.Psy. D.Includes bibliographical referencesby Gavin Kenn
Introduction: Masculinities, discourse and men’s health
No full textIn 1978, the Journal of Social Issues published an article titled, ‘Warning: The Male Sex Role May Be Dangerous to Your Health’. The author, James Harrison, had noted the ‘growing differential in life expectancy between men and women’ (1978, p. 65) in the United States (US) during the twentieth century and wanted to critically review existing research in order to understand what factors might be contributing to this trend. He identified two explanatory perspectives: a ‘biogenetic’ one and a ‘psychosocial’ one. Harrison examined the evidence for both perspectives and concluded that ‘the best available evidence confirms the psychosocial perspective that sex-role socialization accounts for the larger part of men’s shorter life expectancy’ (ibid.). In other words, societal expectations of men were found to be more harmful for their health than any ‘biogenetic’ characteristics that might be attributable to them. Fast-forward to the twenty-first century, and the disparities in life expectancy between men and women have maintained (World Health Organization, 2019)
Designing small molecule polyaromatic p- and n-type semiconductor materials for organic electronics
No full textBy combining computational aided design with synthetic chemistry, we are able to identify core 2D polyaromatic small molecule templates with the necessary optoelectronic properties for p- and n-type materials. By judicious selection of the functional groups, we can tune the physical properties of the material making them amenable to solution and vacuum deposition. In addition to solubility, we observe that the functional group can influence the thin film molecular packing. By developing structure-property relationships (SPRs) for these families of compounds we observe that some compounds are better suited for use in organic solar cells, while others, varying only slightly in structure, are favoured in organic field effect transistor devices. We also find that the processing conditions can have a dramatic impact on molecular packing (i.e. 1D vs 2D polymorphism) and charge mobility; this has implications for material and device long term stability. We have developed small molecule p- and n-type materials for organic solar cells with efficiencies exceeding 2%. Subtle variations in the functional groups of these materials produces p- and ntype materials with mobilities higher than 0.3 cm2/Vs. We are also interested in using our SPR approach to develop materials for sensor and bioelectronic applications.Research was undertaken through CSIRO’s Flexible Electronics Theme. ABH, GEC, YS, SM, and AB acknowledgeCSIRO OCE for financial support. The author acknowledges all the work and effort of the co-authors on thesepublications from CSIRO, the Australian Synchrotron, and Australian (University of Melbourne, Monash University,University of Newcastle and University of Warwick) and international collaborators (Wake Forest University, USA;Georgia Institute of Technology, USA; and King Abdullah University of Science and Technology, KSA)
Social and Virtual Networks: Evaluating Synchronous Online Interviewing Using Instant Messenger
No full textThis paper describes an evaluation of the quality and utility of
synchronous online interviewing for data collection in social network
research. Synchronous online interviews facilitated by Instant Messenger
as the communication medium, were undertaken with ten final year
university students. Quantitative and qualitative content analysis of
respondent and researcher evaluation of the quality and utility of IM
indicated that IM was an integral part of student university life and also
an excellent and innovative communication platform; a potential
advancement for research interviewing. IM was subsequently compared
with face-to-face communication in terms of gains and losses for research
interviewing. The efficacy of the method of online interviewing using IM in
this context is discussed. Key Words: Synchronous Online Interviewing,
Instant Messenger, Social Support Networks, Virtual Networks, and
Content Analysi
The use of natural site derived materials as concrete aggregate.
No full textIncludes abstract.Includes bibliographical references.This thesis focuses on the use of site-derived fine material, in its natural form, as aggregate in concrete construction. It is proposed that the utilisation of this type of concrete aggregate will lead to; the preservation of natural materials that would otherwise have to be beneficiated off site, the reduction of waste material produced on a construction site, and an overall energy saving
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