Gain-Scheduled Complementary Filter Design for a MEMS Based Attitude and Heading Reference System

This paper describes a robust and simple algorithm for an attitude and heading reference system (AHRS) based on low-cost MEMS inertial and magnetic sensors. The proposed approach relies on a gain-scheduled complementary filter, augmented by an acceleration-based switching architecture to yield robust performance, even when the vehicle is subject to strong accelerations. Experimental results are provided for a road captive test during which the vehicle dynamics are in high-acceleration mode and the performance of the proposed filter is evaluated against the output from a conventional linear complementary filter

Effects of a video education program for patients with benign uterine tumors receiving high-intensity focused ultrasound treatment

Purpose The purpose of this study was to examine the effects of a video education program in women receiving high-intensity focused ultrasound (HIFU) treatment. Methods This was a quasi-experimental study with a nonequivalent control group non-synchronized design. The participants were 54 patients who had benign uterine tumors and adenomyosis. The data were collected from June to August 2018. A 10-minute video education program on HIFU and post-procedural care was developed based on the literature. The experimental group was provided the video education program with a question-and-answer session for 10 minutes after viewing the video. The control group received usual care (i.e., verbal instructions on post-procedural self-care). The questionnaire survey was conducted twice: before the educational program and before being discharged from the hospital. Differences in uncertainty, emotions, and self-efficacy among patients were analyzed. Data were analyzed using the chi-square test, Shapiro-Wilk test, paired t-test, and t-test with SPSS version 23.0. Results The participants in the experimental group showed a decrease in uncertainty(t=4.33, p<.001), improvements in anxiety(t=–4.07, p<.001) and depression (t=–3.55,p<.001), and an enhancement ofself-efficacy (t=–4.39,p<.001) compared to the control group. Conclusion This nursing intervention was effective at reducing uncertainty, improving emotions, and enhancing self-efficacy. This intervention is feasible for use in nursing practice as an aid for patients when considering treatment methods

Metal-free organic chromophores featuring an ethynyl-thienothiophene linker with an n-hexyl chain for translucent dye-sensitized solar cells

We report the simple synthesis of two organic chromophores featuring an ethynyl-thienothiophene linker with an n-hexyl chain (CSD-03 and CSD-04), their optical and electrochemical properties, and their use as photosensitizers in dye-sensitized solar cells (DSSCs). Our theoretical and experimental studies show that adding the second thienothiophene allows for narrowing the bandgap of the molecule and thus ensuring more light harvesting in the visible region. The efficiencies of both CSD-03 (5.46 ± 0.03%) and CSD-04 (5.20 ± 0.03%) are comparable to that of N719 (5.92 ± 0.01%) in translucent DSSCs fabricated with 5 μm-thick TiO2 photoanodes

Metal-free organic chromophores featuring an ethynyl-thienothiophene linker with an n-hexyl chain for translucent dye-sensitized solar cells

We report the simple synthesis of two organic chromophores featuring an ethynyl-thienothiophene linker with an n-hexyl chain (CSD-03 and CSD-04), their optical and electrochemical properties, and their use as photosensitizers in dye-sensitized solar cells (DSSCs). Our theoretical and experimental studies show that adding the second thienothiophene allows for narrowing the bandgap of the molecule and thus ensuring more light harvesting in the visible region. The efficiencies of both CSD-03 (5.46 ± 0.03%) and CSD-04 (5.20 ± 0.03%) are comparable to that of N719 (5.92 ± 0.01%) in translucent DSSCs fabricated with 5 μm-thick TiO2 photoanodes

2011 International Design Exchange Project, Hidden Space Project. Volume 2, Urban rooftops

Urban Rooftops: Our cities are now having to rethink and redevelop the use of space more creatively and ingeniously than ever before. Space is precious in any context but the extra pressure cities’ face with the ever growing need to accommodate increasing populations mean that every open area is now a new possibility for spatial development. One of the most recent and fascinating trends is the use of rooftops. Their appeal lies in their surprise and undiscovered disposition. Their purpose might involve a large community or an individual but because of its elevated position, each journey to that roof space provides a chance for adventure. They are an addition to older established buildings but come with a new brief and therefore a new spirit, encouraging creativity and positive thinking, using a different energy. The master planners and the local communities need to consider a more responsible composition of ideas to our urban and earthly needs. Sustainable energy use and material choice are to be rewarded but what of the function? Is just viewing the simple horizon above the rooftops function enough? relieving us of our daily stresses and seeing the city as sleeping giant or should we be industrious, striking balances of nature, pulling it back from disaster, giving space to synergistic projects. The students were asked to design a Rooftop structure in a densely inhabited urban neighbourhood, namely Burbage House, Curtain Road, Shoreditch London E2. Aim: The aim of this lofty structure or series of structures sets out to encourage, inspire a community or an individual to cultivate positive practices. The rooftop should connect and bond visually or through metaphor within its surrounding neighbourhood. The space should take account of the social and cultural diversity that resides close by. Context: Shoreditch is weave of close knit streets with its former industrial context provide an area for those that want to step out of the norm and the corporate, it’s place to imagine new business. Innovative creative houses have set up home using space imaginatively, sharing with like minded disciplines. The narrowness of the streets encourages networking and enhances collective working practices. Warehouse constructions reveal their previous activity and function, reminding us of the busy people, the noise and the industry. The buildings allow a maximum of light though to the interior, the detail in the window frames and brickwork show a sense of pride. The Interiors are simple and true the outer structure, revealing angles and curves. The space is unattractive to the Multi-national corporations, and as there is little capacity for charging large rents makes this area economically suitable for young and emerging practices to set up. The rawness of the interior spaces, unadulterated by recent 20th century trends provide the perfect utilitarian and vacant habitat for the fresh ideas where pioneering and ground breaking professions materialize. View: In some respects the rawness of such a landscape, its lack of conformity compares well with an open landscape. When standing on the roof looking across London, its openness and horizontal neutrality engenders a sense of calm and invigoration. Suddenly there are possibilities and scope for living positively. Hurried life slows down and London becomes picturesque. Novalis wrote ‘Everything seen from a distance becomes poetry :distant mountains, distant people, distant events. Everything become romantic’

Tin doped indium oxide core-TiO <inf>2</inf> shell nanowires on stainless steel mesh for flexible photoelectrochemical cells

Photoanode architecture is built on highly conductive tin doped indium oxide (ITO) nanowires (NWs) on a flexible stainless steel mesh (SSM). ITO nanowires were coated with the atomic layer deposition grown TiO 2 layer and the photoelectrochemical performance of the stainless steel mesh based photoanode were examined as a function of wire-length and shell-thickness. The photoanode consisting of 20 m-long nanowire core and 36 nm thick shell increased the photocurrent of the testing cell by 4 times, compared to a reference cell. This enhanced photochemical activity is attributed to higher light harvesting efficiency of nanowire arrays and suppressed charge recombination of core-shell structure. © 2012 American Institute of Physics

Spontaneous aortic rupture in a patient with neurofibromatosis type 1

Neurofibromatosis type I (NF-1) is a rare autosomal dominant genetic disorder occurring in 1 in 3,000 individuals. Vasculopathy is a rarely reported finding in patients with NF-1. Here, we report a case of recurrent aortic pseudoaneurysm after endovascular aneurysm repair in a 49-year-old male patient with NF-1. On the sixth postoperative day following a successful open surgical repair of an aortic pseudoaneurysm, he developed hemoperitoneum due to a delayed rupture of the mesenteric artery branch. This was treated with endovascular coil embolization. We report the clinical features and histologic findings of this rare vascular disorder with a review of the relevant literature