70 research outputs found

    A6_6 Lunar-tising

    Get PDF
    Lunar advertising, although a Sci-Fi concept, has caught the attention of company executivesbefore. In this paper, the authors examine the feasability of Moon advertising using lasers, andexamine the mechanics behind this. The paper nds that the power required to beam a messageon the Moon's surface are in the order of magnitude of 10^12 W, but any combination of normaloptical lasers can be used as there is no special requirements

    A6_4 The Hyperloop through the centre of the Earth

    Get PDF
    This paper describes how a Hyperloop style pod would travel through a low pressure tunnel straight through the Earth. The equations of motion for the pod in an airless tube are derived, and the total travel time is found, agreeing with the commonly quoted value of 42 minutes. A peak velocity of about 8000 ms−1 was also calculated. Furthermore, a numerical solution to an Earth bisecting tube with low air resistance was found, and graphed to show an exponential decay in amplitude of trajectory. the loss of velocity every oscillation meant the pod would not reach anywhere near the other side of the planet

    A6_8 The Hyperloop through the centre of the Earth II

    Get PDF
    In previous research it was shown how a 500 kg Hyperloop pod falling through the centre of the Earth would never return to the surface when air resistance is considered. In this paper two possible methods to ensure that the pod would reach the opposite side of the Earth are considered; a thruster and a winch. For 5000 kg of fuel, it was determined that the total travel time using thrusters would be 2820 s if all the fuel is burnt instantaneously, making it a feasible solution. On the other hand, the travel time using a winch was over 86 hours. Therefore using such a method would not be particularly useful given assumptions made here

    A6_3 Taking the Moon to Mars

    Get PDF
    We apply the Method of Patched Conics to estimate the trajectory the Moon would take if it wereto be removed from its current orbit and placed in the same orbit at Mars. We calculate thatthe velocity changes at Earth and Mars required for such a trajectory are 1906 m/s and 1356 m/srespectively. We determine that it would take one coal burning power plant in excess of 11012years to produce enough energy for just one velocity change, making the concept predictablyunfeasible with current technology

    A6_2 How Hot is Tatooine

    Get PDF
    Tatooine is a fictional terrestrial planet from the Star Wars universe which orbits a set of binary stars. By considering the classification of its Suns, Tatoo I and Tatoo II, and the planets orbital period we were able to find the radius of Tatooine’s orbit, 1.15 Au. It was then possible to work out the varying solar constants for Tatooine depending on its position relative to both Suns, allowing us to calculate an average daytime temperature range of 42.3 celcius to −10.7 celcius

    An individually-tailored multifactorial intervention program for older fallers in a middle-income developing country: Malaysian Falls Assessment and Intevention Trial (MyFAIT)

    Get PDF
    Background: In line with a rapidly ageing global population, the rise in the frequency of falls will lead to increased healthcare and social care costs. This study will be one of the few randomized controlled trials evaluating a multifaceted falls intervention in a low-middle income, culturally-diverse older Asian community. The primary objective of our paper is to evaluate whether individually tailored multifactorial interventions will successfully reduce the number of falls among older adults. Methods: Three hundred community-dwelling older Malaysian adults with a history of (i) two or more falls, or (ii) one injurious fall in the past 12 months will be recruited. Baseline assessment will include cardiovascular, frailty, fracture risk, psychological factors, gait and balance, activities of daily living and visual assessments. Fallers will be randomized into 2 groups: to receive tailored multifactorial interventions (intervention group); or given lifestyle advice with continued conventional care (control group). Multifactorial interventions will target 6 specific risk factors. All participants will be re-assessed after 12 months. The primary outcome measure will be fall recurrence, measured with monthly falls diaries. Secondary outcomes include falls risk factors; and psychological measures including fear of falling, and quality of life.Previous studies evaluating multifactorial interventions in falls have reported variable outcomes. Given likely cultural, personal, lifestyle and health service differences in Asian countries, it is vital that individually-tailored multifaceted interventions are evaluated in an Asian population to determine applicability of these interventions in our setting. If successful, these approaches have the potential for widespread application in geriatric healthcare services, will reduce the projected escalation of falls and fall-related injuries, and improve the quality of life of our older community

    Effects of antiplatelet therapy on stroke risk by brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases: subgroup analyses of the RESTART randomised, open-label trial

    Get PDF
    Background Findings from the RESTART trial suggest that starting antiplatelet therapy might reduce the risk of recurrent symptomatic intracerebral haemorrhage compared with avoiding antiplatelet therapy. Brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases (such as cerebral microbleeds) are associated with greater risks of recurrent intracerebral haemorrhage. We did subgroup analyses of the RESTART trial to explore whether these brain imaging features modify the effects of antiplatelet therapy

    Proceedings of Patient Reported Outcome Measure’s (PROMs) Conference Oxford 2017: Advances in Patient Reported Outcomes Research

    Get PDF
    A33-Effects of Out-of-Pocket (OOP) Payments and Financial Distress on Quality of Life (QoL) of People with Parkinson’s (PwP) and their Carer
    corecore