201 research outputs found

    Journey to Burning Man

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    This comic book tells the story of four friends coping from personal trauma and stress as they embark on a journey of self-discovery and healing. The storyline focuses on character development and growth as they travel to the Burning Man festival in the Black Rock Desert of Nevada. This trip, and their desire to go in the first place, reflects open-mindedness and a willingness to engage in alternative forms of medicine beneficial to surviving and thriving after illness or injury

    Headlamp/Bike Light Damping System

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    The task for this project is to design a headlamp and/or bike light that absorbs the impact shocks from the user’s actions. The user that the system is being designed for may be riding a bike or running on a trail in the evening or early in the morning where the light needs to be stabilized and their path must be illuminated. This report presents the final design chosen after months of prototyping and design iteration. It encompasses the system design, design verification through testing, implementation, future recommendations, and lessons learned throughout the process. The chosen design utilizes a fully passive, magnetic damping system to counteract disturbances in the vertical direction. Through vibration tests, drop tests, and field tests, the design is refined and validated to ensure it fulfills its intended functions. The main test was the vibration test which used accelerometers to help find the optimal height between the magnets that will induce the most damping. The vertical axis was the most important that saw the most instability so that was where the stabilizing system was implemented. The ideal distance was found to be 1.22 inches which means the distance to the middle magnets is 0.61 inches. When the magnets move closer than this 0.61 inches it causes a rapid increase in the magnetic force and causes the system to rapidly stabilize. This distance will provide the best damping for when the headlamp is worn for casual use and up to light jogging. When going through the design process many different types of damping systems were considered and magnets ended up being the most efficient due to their ability to self-stabilize, decrease the manufacturing difficulty, and keep the system completely mechanical

    The high-temperature rotation-vibration spectrum and rotational clustering of silylene (SiH2_2)

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    A rotation-vibration line list for the electronic ground state (X~1A1\tilde{X}^{1}A_{1}) of SiH2_2 is presented. The line list, named CATS, is suitable for temperatures up to 2000 K and covers the wavenumber range 0 - 10,000 cm−1^{-1}(wavelengths >1.0>1.0 μ\mum) for states with rotational excitation up to J=52J=52. Over 310 million transitions between 593 804 energy levels have been computed variationally with a new empirically refined potential energy surface, determined by refining to 75 empirical term values with J≤5J\leq 5 and a newly computed high-level ab initio dipole moment surface. This is the first, comprehensive high-temperature line list to be reported for SiH2_2 and it is expected to aid the study of silylene in plasma physics, industrial processes and possible astronomical detection. Furthermore, we investigate the phenomenon of rotational energy level clustering in the spectrum of SiH2_2. The CATS line list is available from the ExoMol database (www.exomol.com) and the CDS database

    Through thick or thin: Multiple components of the magneto-ionic medium towards the nearby H II{\rm H\,{\small II}} region Sharpless 2-27 revealed by Faraday tomography

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    Sharpless 2-27 (Sh2-27) is a nearby H II{\rm H\,{\small II}} region excited by ζ\zetaOph. We present observations of polarized radio emission from 300 to 480 \,MHz towards Sh2-27, made with the Parkes 64 \,m Radio Telescope as part of the Global Magneto-Ionic Medium Survey. These observations have an angular resolution of 1.35∘1.35^{\circ}, and the data are uniquely sensitive to magneto-ionic structure on large angular scales. We demonstrate that background polarized emission towards Sh2-27 is totally depolarized in our observations, allowing us to investigate the foreground. We analyse the results of Faraday tomography, mapping the magnetised interstellar medium along the 165 \,pc path to Sh2-27. The Faraday dispersion function in this direction has peaks at three Faraday depths. We consider both Faraday thick and thin models for this observation, finding that the thin model is preferred. We further model this as Faraday rotation of diffuse synchrotron emission in the Local Bubble and in two foreground neutral clouds. The Local Bubble extends for 80 \,pc in this direction, and we find a Faraday depth of −0.8±0.4 -0.8 \pm 0.4\,rad \,m−2^{-2}. This indicates a field directed away from the Sun with a strength of −2.5±1.2 μ-2.5\pm1.2\,\muG. The near and far neutral clouds are each about 30 \,pc thick, and we find Faraday depths of −6.6±0.6 -6.6\pm0.6\,rad \,m−2^{-2} and +13.7±0.8 +13.7\pm0.8\,rad \,m−2^{-2}, respectively. We estimate that the line-of-sight magnetic strengths in the near and far cloud are B∥,near≈−15 μGB_{\parallel, \text{near}} \approx -15\,\mu\text{G} and B∥,far≈+30 μGB_{\parallel, \text{far}} \approx +30\,\mu\text{G}. Our results demonstrate that Faraday tomography can be used to investigate the magneto-ionic properties of foreground features in front of nearby H II{\rm H\,{\small II}} regions.Comment: 14+4 pages, 10+6 figures, 2 tables. In press with MNRA

    Mountains Without End

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    Monograph/artist book exploring my relationship to landscape and mountains within my art practice. Includes essays from Thomas A Clark, (UK) Dr David Watson (Australia), introduction from Sandie Macrae (UK) and a contribution from Alec Finlay (UK). This book was a monograph featuring recent works that explored how we experience and participate in the experience of landscape, and in particular, remote, wild landscapes and mountainous terrain. Both Thomas A Clark and Dr David Watson wrote essays on my practice, Alec Finlay contributed a poem "Pataphysical Cuillin" and Sandie Macrae wrote an introduction. The book was published by ROOMBOOKS - I am represented in the UK by ROOM (now called Roaming ROOM). The book features works made over the last 4 years, including drawings, text based drawings, photographs, paintings, and digitally altered images. It ended with a selection of my on writings on my experiences of different landscapes, texts that emerged initially through my blog "living mountains". The book was published by ROOMBOOKS in 2013, ISBN 978-0-95499-156-2

    Healthcare provider and service user perspectives on STI risk reduction interventions for young people and MSM in the UK

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    Objective Behavioural interventions have been shown to reduce sexual behaviours associated with increased risk of sexually transmitted infections in young people (<25 years) and men who have sex with men (MSM) internationally, but evidence from England is limited. We aimed to explore service provider and user experiences and perspectives on behavioural interventions to reduce sexual behaviour risks, and the use of automated methods to triage individuals to these services. Methods We conducted a sequential mixed methods study with sexual health service providers and users in 2015/2016. Qualitative interviews with providers and service users (heterosexual young people and MSM) in London and Brighton allowed us to explore a range of experiences and expectations. A subsequent national web-survey of service providers measured the feasibility of delivery within existing resources and preferences for intervention attributes. Results We conducted 35 service user (15 heterosexual young people; 20 MSM), and 26 provider interviews, and had 100 web-survey responses. We found considerable heterogeneity in prevention services offered. Service users and providers were broadly supportive of tailoring interventions offered, but service users raised concerns about automated, data-driven triage, particularly around equity and fairness of service delivery. Digital technologies, including social media or apps, were appealing to providers, being less resource intensive. However, one-to-one talking interventions remained popular with both service users and providers, being familiar, trust-worthy, and personal. Key tensions between desirability of interventions and availability of resources to deliver them was acknowledged/recognised by providers and users. Conclusion Overall, behavioural interventions to reduce sexual behaviour risks were viewed favourably by service providers and users, with key considerations including: privacy, personalisation and convenience. However, introducing desirable targeted interventions within heterogeneous sexual health settings will require resources to adapt interventions and research to fully understand the barriers and facilitators to use within routine services

    Low-frequency characterization of quantum tunneling in flux qubits

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    We propose to investigate flux qubits by the impedance measurement technique (IMT), currently used to determine the current--phase relation in Josephson junctions. We analyze in detail the case of a high-quality tank circuit coupled to a persistent-current qubit, to which IMT was successfully applied in the classical regime. It is shown that low-frequency IMT can give considerable information about the level anticrossing, in particular the value of the tunneling amplitude. An interesting difference exists between applying the ac bias directly to the tank and indirectly via the qubit. In the latter case, a convenient way to find the degeneracy point in situ is described. Our design only involves existing technology, and its noise tolerance is quantitatively estimated to be realistic.Comment: 6 pages, 11 figures, to appear in Phys.Rev.
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