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https://www.readbyqxmd.com/read/29756303/cholesteric-liquid-crystal-shells-as-enabling-material-for-information-rich-design-and-architecture
#1
REVIEW
Mathew Schwartz, Gabriele Lenzini, Yong Geng, Peter B Rønne, Peter Y A Ryan, Jan P F Lagerwall
The responsive and dynamic character of liquid crystals (LCs), arising from their ability to self-organize into long-range ordered structures while maintaining fluidity, has given them a role as key enabling materials in the information technology that surrounds us today. Ongoing research hints at future LC-based technologies of entirely different types, for instance by taking advantage of the peculiar behavior of cholesteric liquid crystals (CLCs) subject to curvature. Spherical shells of CLC reflect light omnidirectionally with specific polarization and wavelength, tunable from the UV to the infrared (IR) range, with complex patterns arising when many of them are brought together...
May 14, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29751560/direct-reflectance-measurements-from-drones-sensor-absolute-radiometric-calibration-and-system-tests-for-forest-reflectance-characterization
#2
Teemu Hakala, Lauri Markelin, Eija Honkavaara, Barry Scott, Theo Theocharous, Olli Nevalainen, Roope Näsi, Juha Suomalainen, Niko Viljanen, Claire Greenwell, Nigel Fox
Drone-based remote sensing has evolved rapidly in recent years. Miniaturized hyperspectral imaging sensors are becoming more common as they provide more abundant information of the object compared to traditional cameras. Reflectance is a physically defined object property and therefore often preferred output of the remote sensing data capture to be used in the further processes. Absolute calibration of the sensor provides a possibility for physical modelling of the imaging process and enables efficient procedures for reflectance correction...
May 3, 2018: Sensors
https://www.readbyqxmd.com/read/29751554/the-use-of-drones-in-spain-towards-a-platform-for-controlling-uavs-in-urban-environments
#3
Pablo Chamoso, Alfonso González-Briones, Alberto Rivas, Federico Bueno De Mata, Juan Manuel Corchado
Rapid advances in technology make it necessary to prepare our society in every aspect. Some of the most significant technological developments of the last decade are the UAVs (Unnamed Aerial Vehicles) or drones. UAVs provide a wide range of new possibilities and have become a tool that we now use on a daily basis. However, if their use is not controlled, it could entail several risks, which make it necessary to legislate and monitor UAV flights to ensure, inter alia, the security and privacy of all citizens...
May 3, 2018: Sensors
https://www.readbyqxmd.com/read/29735229/drones-for-provision-of-flotation-support-in-simulated-drowning
#4
Anders Bäckman, Jacob Hollenberg, Leif Svensson, Mattias Ringh, Per Nordberg, Therese Djärv, Sune Forsberg, Olof Hernborg, Andreas Claesson
OBJECTIVE: The feasibility and potential of using drones for providing flotation devices in cases of drowning have not yet been assessed. We hypothesize that a drone carrying an inflatable life buoy is a faster way to provide flotation compared with traditional methods. The purpose of this study is to explore the feasibility and efficiency of using a drone for delivering and providing flotation support to conscious simulated drowning victims. METHODS: A simulation study was performed with a simulated drowning victim 100 m from the shore...
May 2018: Air Medical Journal
https://www.readbyqxmd.com/read/29717953/robot-assisted-surgical-ward-rounds-virtually-always-there
#5
Stefanie M Croghan, Paul Carroll, Sarah Reade, Amy E Gillis, Paul F Ridgway
 While an explosion in technological sophistication has revolutionized surgery within the operating theatre, delivery of surgical ward-based care has seen little innovation.  Use of telepresence allowing off-site clinicians communicate with patients has been largely restricted to outpatient settings or use of complex, expensive, static devices.  We designed a prospective study to ascertain feasibility and face validity of a remotely controlled mobile audiovisual drone (LUCY) to access inpatients.  This device is, uniquely, lightweight, freely mobile and emulates 'human' interaction by swiveling and adjusting height to patients' eye-level...
May 2, 2018: Journal of Innovation in Health Informatics
https://www.readbyqxmd.com/read/29705058/molecular-physiological-and-behavioral-responses-of-honey-bee-apis-mellifera-drones-to-infection-with-microsporidian-parasites
#6
Holly L Holt, Gabriel Villar, Weiyi Cheng, Jun Song, Christina M Grozinger
Susceptibility to pathogens and parasites often varies between sexes due to differences in life history traits and selective pressures. Nosema apis and Nosema ceranae are damaging intestinal pathogens of European honey bees (Apis mellifera). Nosema pathology has primarily been characterized in female workers where infection is energetically costly and accelerates worker behavioral maturation. Few studies, however, have examined infection costs in male honey bees (drones) to determine if Nosema similarly affects male energetic status and sexual maturation...
April 26, 2018: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29702697/slamm-visual-monocular-slam-with-continuous-mapping-using-multiple-maps
#7
Hayyan Afeef Daoud, Aznul Qalid Md Sabri, Chu Kiong Loo, Ali Mohammed Mansoor
This paper presents the concept of Simultaneous Localization and Multi-Mapping (SLAMM). It is a system that ensures continuous mapping and information preservation despite failures in tracking due to corrupted frames or sensor's malfunction; making it suitable for real-world applications. It works with single or multiple robots. In a single robot scenario the algorithm generates a new map at the time of tracking failure, and later it merges maps at the event of loop closure. Similarly, maps generated from multiple robots are merged without prior knowledge of their relative poses; which makes this algorithm flexible...
2018: PloS One
https://www.readbyqxmd.com/read/29694689/quantifying-shorebird-habitat-in-managed-wetlands-by-modeling-shallow-water-depth-dynamics
#8
Danica Schaffer-Smith, Jennifer J Swenson, Matthew E Reiter, Jennifer E Isola
Over 50% of Western Hemisphere shorebird species are in decline due to ongoing habitat loss and degradation. In some regions of high wetland loss, shorebirds are heavily reliant on a core network of remaining human-managed wetlands during migration journeys in the spring and fall. While most refuges have been designed and managed to match the habitat needs of waterfowl, shorebirds typically require much shallower water (<10cm deep). Traditional static habitat modeling approaches at relatively coarse spatial and temporal resolution are insufficient to capture dynamic changes within this narrow water depth range...
April 25, 2018: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/29663833/mortality-data-in-the-age-of-drones-%C3%A2
#9
Elspeth Carruthers
Mortality data plays an essential role in shaping humanitarian, legal and ethical responses to conflict situations. The rise of drone warfare poses new questions regarding the accuracy and reliability of mortality data in conflict. This article examines some of the methodological and political challenges to collecting mortality data in drone warfare, and how the way in which drones are framed in public discourse contributes to these challenges.
April 17, 2018: Medicine, Conflict, and Survival
https://www.readbyqxmd.com/read/29653153/unmanned-aerial-vehicles-drones-to-prevent-drowning
#10
Celia Seguin, Gilles Blaquière, Anderson Loundou, Pierre Michelet, Thibaut Markarian
BACKGROUND: Drowning literature have highlighted the submersion time as the most powerful predictor in assessing the prognosis. Reducing the time taken to provide a flotation device and prevent submersion appears of paramount importance. Unmanned aerial vehicles (UAVs) can provide the location of the swimmer and a flotation device. OBJECTIVE: The objective of this simulation study was to evaluate the efficiency of a UAV in providing a flotation device in different sea conditions, and to compare the times taken by rescue operations with and without a UAV (standard vs UAV intervention)...
April 10, 2018: Resuscitation
https://www.readbyqxmd.com/read/29650982/a-hyphenated-preconcentrator-infrared-hollow-waveguide-sensor-system-for-n-2-o-sensing
#11
João Flavio da Silveira Petruci, Andreas Wilk, Arnaldo Alves Cardoso, Boris Mizaikoff
Following the Kyoto protocol, all signatory countries must provide an annual inventory of greenhouse-gas emission including N2 O. This fact associated with the wide variety of sources for N2 O emissions requires appropriate sensor technologies facilitating in-situ monitoring, compact dimensions, ease of operation, and sufficient sensitivity for addressing such emission scenarios. In this contribution, we therefore describe an innovative portable mid-infrared chemical sensor system for quantifying gaseous N2 O via coupling a substrate-integrated hollow waveguide (iHWG) simultaneously serving as highly miniaturized mid-infrared photon conduit and gas cell to a custom-made preconcentrator...
April 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29649602/point-of-care-and-point-of-can-leveraging-reference-laboratory-capacity-for-integrated-diagnosis-of-fever-syndromes-in-the-tropics
#12
REVIEW
Makeda Semret, Momar Ndao, Jan Jacobs, Cedric P Yansouni
BACKGROUND: There is an urgent need for integrated diagnosis of febrile syndromes, able to account for multiple pathogens and inform decisions for clinical care and public health. AIMS: To reflect on the evolving roles of laboratory-based testing for non-malarial febrile illnesses (NMFI) in low-resource settings (LRS), and to consider how advances in diagnostics, in connectivity and transport, and in quality-systems implementation may substantially enhance the capacity of reference laboratories to bridge the current gap between remote passive surveillance and clinically meaningful integrated fever diagnosis...
April 9, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29624736/mr-fingerprinting-deep-reconstruction-network-drone
#13
Ouri Cohen, Bo Zhu, Matthew S Rosen
PURPOSE: Demonstrate a novel fast method for reconstruction of multi-dimensional MR fingerprinting (MRF) data using deep learning methods. METHODS: A neural network (NN) is defined using the TensorFlow framework and trained on simulated MRF data computed with the extended phase graph formalism. The NN reconstruction accuracy for noiseless and noisy data is compared to conventional MRF template matching as a function of training data size and is quantified in simulated numerical brain phantom data and International Society for Magnetic Resonance in Medicine/National Institute of Standards and Technology phantom data measured on 1...
April 6, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29617837/leaf-rolling-in-maize-crops-from-leaf-scoring-to-canopy-level-measurements-for-phenotyping
#14
F Baret, S Madec, K Irfan, J Lopez, A Comar, M Hemmerlé, D Dutartre, S Praud, M H Tixier
Leaf rolling in maize crops is one of the main plant reactions to water stress that can be visually scored in the field. However, leaf-scoring techniques do not meet the high-throughput requirements needed by breeders for efficient phenotyping. Consequently, this study investigated the relationship between leaf-rolling scores and changes in canopy structure that can be determined by high-throughput remote-sensing techniques. Experiments were conducted in 2015 and 2016 on maize genotypes subjected to water stress...
April 2, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29601182/sniffing-entrapped-humans-with-sensor-arrays
#15
Andreas T Güntner, Nicolay J Pineau, Paweł Mochalski, Helmut Wiesenhofer, Agapios Agapiou, Christopher A Mayhew, Sotiris E Pratsinis
Earthquakes are lethal natural disasters frequently burying people alive under collapsed buildings. Tracking entrapped humans from their unique volatile chemical signature with hand-held devices would accelerate urban search and rescue (USaR) efforts. Here, a pilot study is presented with compact and orthogonal sensor arrays to detect the breath- and skin-emitted metabolic tracers acetone, ammonia, isoprene, CO2 , and relative humidity (RH), all together serving as sign of life. It consists of three nanostructured metal-oxide sensors (Si-doped WO3 , Si-doped MoO3 , and Ti-doped ZnO), each specifically tailored at the nanoscale for highly sensitive and selective tracer detection along with commercial CO2 and humidity sensors...
April 5, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29577506/the-role-of-epistatic-interactions-underpinning-resistance-to-parasitic-varroa-mites-in-haploid-honeybee-drones
#16
Benjamin H Conlon, Eva Frey, Peter Rosenkranz, Barbara Locke, Robin F A Moritz, Jarkko Routtu
The Red Queen Hypothesis predicts that host-parasite coevolutionary dynamics can select for host resistance through increased genetic diversity, recombination and evolutionary rates. However, in haplodiploid organisms such as the honey bee (Apis mellifera), models suggest the selective pressure is weaker than in diploids. Haplodiploid sex-determination, found in A. mellifera, can allow deleterious recessive alleles to persist in the population through the diploid sex with negative effects predominantly expressed in the haploid sex...
March 25, 2018: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/29572315/development-and-innovation-of-system-resources-to-optimize-patient-care
#17
Thomas J Johnson, Michael J Brownlee
PURPOSE: Various incremental and disruptive healthcare innovations that are occurring or may occur are discussed, with insights on how multihospital health systems can prepare for the future and optimize the continuity of patient care provided. SUMMARY: Innovation in patient care is occurring at an ever-increasing rate, and this is especially true relative to the transition of patients through the care continuum. Health systems must leverage their ability to standardize and develop electronic health record (EHR) systems and other infrastructure necessary to support patient care and optimize outcomes; examples include 3D printing of patient-specific medication dosage forms to enhance precision medicine, the use of drones for medication delivery, and the expansion of telehealth capabilities to improve patient access to the services of pharmacists and other healthcare team members...
April 1, 2018: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/29565346/ice-diving-drones
#18
Mark Harris
No abstract text is available yet for this article.
February 20, 2018: Scientific American
https://www.readbyqxmd.com/read/29562605/a-collaborative-approach-for-surface-inspection-using-aerial-robots-and-computer-vision
#19
Martin Molina, Pedro Frau, Dario Maravall
Aerial robots with cameras on board can be used in surface inspection to observe areas that are difficult to reach by other means. In this type of problem, it is desirable for aerial robots to have a high degree of autonomy. A way to provide more autonomy would be to use computer vision techniques to automatically detect anomalies on the surface. However, the performance of automated visual recognition methods is limited in uncontrolled environments, so that in practice it is not possible to perform a fully automatic inspection...
March 17, 2018: Sensors
https://www.readbyqxmd.com/read/29561901/measuring-behavioral-responses-of-sea-turtles-saltwater-crocodiles-and-crested-terns-to-drone-disturbance-to-define-ethical-operating-thresholds
#20
Elizabeth Bevan, Scott Whiting, Tony Tucker, Michael Guinea, Andrew Raith, Ryan Douglas
Drones are being increasingly used in innovative ways to enhance environmental research and conservation. Despite their widespread use for wildlife studies, there are few scientifically justified guidelines that provide minimum distances at which wildlife can be approached to minimize visual and auditory disturbance. These distances are essential to ensure that behavioral and survey data have no observer bias and form the basis of requirements for animal ethics and scientific permit approvals. In the present study, we documented the behaviors of three species of sea turtle (green turtles, Chelonia mydas, flatback turtles, Natator depressus, hawksbill turtles, Eretmochelys imbricata), saltwater crocodiles (Crocodylus porosus), and crested terns (Thalasseus bergii) in response to a small commercially available (1...
2018: PloS One
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