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https://www.readbyqxmd.com/read/27922128/space-geodetic-monitoring-of-engineered-structures-the-ongoing-destabilization-of-the-mosul-dam-iraq
#1
Pietro Milillo, Roland Bürgmann, Paul Lundgren, Jacqueline Salzer, Daniele Perissin, Eric Fielding, Filippo Biondi, Giovanni Milillo
We present a detailed survey of the ongoing destabilization process of the Mosul dam. The dam is located on the Tigris river and is the biggest hydraulic structure in Iraq. From a geological point of view the dam foundation is poor due to a site geology formed by alternating strata of highly soluble materials including gypsum, anhydrite, marl and limestone. Here we present the first multi-sensor cumulative deformation map for the dam generated from space-based interferometric synthetic aperture radar measurements from the Italian constellation COSMO-SkyMed and the European sensor Sentinel-1a over the period 2014-2016 that we compare to an older dataset spanning 2004-2010 acquired with the European Envisat satellite...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27916877/short-range-vital-signs-sensing-based-on-eemd-and-cwt-using-ir-uwb-radar
#2
Xikun Hu, Tian Jin
The radar sensor described realizes healthcare monitoring capable of detecting subject chest-wall movement caused by cardiopulmonary activities and wirelessly estimating the respiration and heartbeat rates of the subject without attaching any devices to the body. Conventional single-tone Doppler radar can only capture Doppler signatures because of a lack of bandwidth information with noncontact sensors. In contrast, we take full advantage of impulse radio ultra-wideband (IR-UWB) radar to achieve low power consumption and convenient portability, with a flexible detection range and desirable accuracy...
November 30, 2016: Sensors
https://www.readbyqxmd.com/read/27910650/full-wave-feasibility-study-of-anti-radar-diagnostic-of-magnetic-field-based-on-o-x-mode-conversion-and-oblique-reflectometry-imaging
#3
Orso Meneghini, Francesco A Volpe
An innovative millimeter wave diagnostic is proposed to measure the local magnetic field and edge current as a function of the minor radius in the tokamak pedestal region. The idea is to identify the direction of minimum reflectivity at the O-mode cutoff layer. Correspondingly, the transmissivity due to O-X mode conversion is maximum. That direction, and the angular map of reflectivity around it, contains information on the magnetic field vector B at the cutoff layer. Probing the plasma with different wave frequencies provides the radial profile of B...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910541/research-on-the-best-measurement-situation-between-optical-probe-and-tissue-surfaces-in-non-invasive-detection
#4
Xuyao Yu, Rong Liu, Hui Yu, Jiao Wang, Jun Wang, Kexin Xu
Near-infrared spectroscopy is often used for the non-invasive detection of composition in the human body, such as that of blood glucose and haemoglobin, due to its high penetration depth into tissues. Although it is feasible to position the optical probe precisely, contact situation between probe and human tissues is a difficult problem to determine because of physiological tremor and mechanical performance of bio-soft tissue. Here, we proposed a novel estimation method for the situation between the optical probe and tissue surfaces based on the dynamic auto-correlation matrix of two-dimensional correlation spectroscopy (2DCOS) and radar chart...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27906353/achieving-flexible-low-scattering-metasurface-based-on-randomly-distribution-of-meta-elements
#5
Junming Zhao, Boyu Sima, Nan Jia, Cheng Wang, Bo Zhu, Tian Jiang, Yijun Feng
In the paper, a flexible low-scattering metasurface is proposed and realized. The layout is composed of similar "#" shaped elements with variable sizes which are randomly distributed along the surface. The various dimensions of the meta-elements lead to different reflection phases for the meta-elements with respect to the incident plane wave, resulting a diffuse reflection surface and exhibiting a broadband backward low-scattering property. In consideration of the flexibility, metasurfaces composed of printed metallic element films attaching with flexible substrate are designed, fabricated and measured in microwave domain...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27903041/general-practitioners-knowledge-and-management-of-dry-mouth-a-qualitative-study
#6
Natalie J Appleby, Meredith J Temple-Smith, Margaret A Stacey, Denise L Bailey, Elizabeth M Deveny, Marie Pirotta
BACKGROUND: Dry mouth (xerostomia) is common and can have significant consequences for a patient's general and oral health. Multiple medications may compromise the flow and quality of saliva. OBJECTIVE: This study explored general practitioners' (GPs') perceptions, knowledge and management of dry mouth, and whether consideration of oral health influences prescribing patterns. METHODS: Semi-structured interviews with 20 GPs in Melbourne, Victoria, were audiotaped, transcribed and analysed...
December 2016: Australian Family Physician
https://www.readbyqxmd.com/read/27894839/relationship-of-p3b-single-trial-latencies-and-response-times-in-one-two-and-three-stimulus-oddball-tasks
#7
Matthew M Walsh, Glenn Gunzelmann, John R Anderson
The P300 is one of the most widely studied components of the human event-related potential. According to a longstanding view, the P300, and particularly its posterior subcomponent (i.e., the P3b), is driven by stimulus categorization. Whether the P3b relates to tactical processes involved in immediate responding or strategic processes that affect future behavior remains controversial, however. It is difficult to determine whether variability in P3b latencies relates to variability in response times because of limitations in the methods currently available to quantify the latency of the P3b during single trials...
November 25, 2016: Biological Psychology
https://www.readbyqxmd.com/read/27890965/beescout-a-model-of-bee-scouting-behaviour-and-a-software-tool-for-characterizing-nectar-pollen-landscapes-for-beehave
#8
M A Becher, V Grimm, J Knapp, J Horn, G Twiston-Davies, J L Osborne
Social bees are central place foragers collecting floral resources from the surrounding landscape, but little is known about the probability of a scouting bee finding a particular flower patch. We therefore developed a software tool, BEESCOUT, to theoretically examine how bees might explore a landscape and distribute their scouting activities over time and space. An image file can be imported, which is interpreted by the model as a "forage map" with certain colours representing certain crops or habitat types as specified by the user...
November 24, 2016: Ecological Modelling
https://www.readbyqxmd.com/read/27886151/micro-doppler-based-classification-of-human-aquatic-activities-via-transfer-learning-of-convolutional-neural-networks
#9
Jinhee Park, Rios Jesus Javier, Taesup Moon, Youngwook Kim
Accurate classification of human aquatic activities using radar has a variety of potential applications such as rescue operations and border patrols. Nevertheless, the classification of activities on water using radar has not been extensively studied, unlike the case on dry ground, due to its unique challenge. Namely, not only is the radar cross section of a human on water small, but the micro-Doppler signatures are much noisier due to water drops and waves. In this paper, we first investigate whether discriminative signatures could be obtained for activities on water through a simulation study...
November 24, 2016: Sensors
https://www.readbyqxmd.com/read/27886055/identification-while-scanning-of-a-multi-aircraft-formation-based-on-sparse-recovery-for-narrowband-radar
#10
Yuan Jiang, Jia Xu, Shi-Bao Peng, Er-Ke Mao, Teng Long, Ying-Ning Peng
It is known that the identification performance of a multi-aircraft formation (MAF) of narrowband radar mainly depends on the time on target (TOT). To realize the identification task in one rotated scan with limited TOT, the paper proposes a novel identification-while-scanning (IWS) method based on sparse recovery to maintain high rotating speed and super-resolution for MAF identification, simultaneously. First, a multiple chirp signal model is established for MAF in a single scan, where different aircraft may have different Doppler centers and Doppler rates...
November 23, 2016: Sensors
https://www.readbyqxmd.com/read/27881761/where-in-the-air-aerial-habitat-use-of-nocturnally-migrating-birds
#11
Kyle G Horton, Benjamin M Van Doren, Phillip M Stepanian, Andrew Farnsworth, Jeffrey F Kelly
The lower atmosphere (i.e. aerosphere) is critical habitat for migrant birds. This habitat is vast and little is known about the spatio-temporal patterns of distribution and abundance of migrants in it. Increased human encroachment into the aerosphere makes understanding where and when migratory birds use this airspace a key to reducing human-wildlife conflicts. We use weather surveillance radar to describe large-scale height distributions of nocturnally migrating birds and interpret these distributions as aggregate habitat selection behaviours of individual birds...
November 2016: Biology Letters
https://www.readbyqxmd.com/read/27875219/automatic-tracking-and-motility-analysis-of-human-sperm-in-time-lapse-images
#12
Leonardo Urbano, Puneet Masson, Matthew VerMilyea, Moshe Kam
We present a fully automated multi-sperm tracking algorithm. It has the demonstrated capability to detect and track simultaneously hundreds of sperm cells in recorded videos while accurately measuring motility parameters over time and with minimal operator intervention. Algorithms of this kind may help in associating dynamic swimming parameters of human sperm cells with fertility and fertilization rates. Specifically, we offer an image processing method, based on radar tracking algorithms, that detects and tracks automatically the swimming paths of human sperm cells in timelapse microscopy image sequences of the kind that is analyzed by fertility clinics...
November 18, 2016: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/27867790/magma-injection-into-a-long-lived-reservoir-to-explain-geodetically-measured-uplift-application-to-the-2007-2014-unrest-episode-at-laguna-del-maule-volcanic-field-chile
#13
Hélène Le Mével, Patricia M Gregg, Kurt L Feigl
Moving beyond the widely used kinematic models for the deformation sources, we present a new dynamic model to describe the process of injecting magma into an existing magma reservoir. To validate this model, we derive an analytical solution and compare its results to those calculated using the Finite Element Method. A Newtonian fluid characterized by its viscosity, density, and overpressure (relative to the lithostatic value) flows through a vertical conduit, intruding into a reservoir embedded in an elastic domain, leading to an increase in reservoir pressure and time-dependent surface deformation...
August 2016: Journal of Geophysical Research. Solid Earth
https://www.readbyqxmd.com/read/27867781/cloudsat-2c-ice-product-update-with-a-new-ze-parameterization-in-lidar-only-region
#14
Min Deng, Gerald G Mace, Zhien Wang, Elizabeth Berry
The CloudSat 2C-ICE data product is derived from a synergetic ice cloud retrieval algorithm that takes as input a combination of CloudSat radar reflectivity (Ze ) and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation lidar attenuated backscatter profiles. The algorithm uses a variational method for retrieving profiles of visible extinction coefficient, ice water content, and ice particle effective radius in ice or mixed-phase clouds. Because of the nature of the measurements and to maintain consistency in the algorithm numerics, we choose to parameterize (with appropriately large specification of uncertainty) Ze and lidar attenuated backscatter in the regions of a cirrus layer where only the lidar provides data and where only the radar provides data, respectively...
December 16, 2015: Journal of Geophysical Research. Atmospheres: JGR
https://www.readbyqxmd.com/read/27867227/a-pattern-based-definition-of-urban-context-using-remote-sensing-and-gis
#15
Magdalena Benza, John R Weeks, Douglas A Stow, David López-Carr, Keith C Clarke
In Sub-Saharan Africa rapid urban growth combined with rising poverty is creating diverse urban environments, the nature of which are not adequately captured by a simple urban-rural dichotomy. This paper proposes an alternative classification scheme for urban mapping based on a gradient approach for the southern portion of the West African country of Ghana. Landsat Enhanced Thematic Mapper Plus (ETM+) and European Remote Sensing Satellite-2 (ERS-2) synthetic aperture radar (SAR) imagery are used to generate a pattern based definition of the urban context...
September 15, 2016: Remote Sensing of Environment
https://www.readbyqxmd.com/read/27862203/production-quality-control-and-determination-of-human-absorbed-dose-of-no-carrier-added-177-lu-risedronate-for-bone-pain-palliation-therapy
#16
Nafise Salek, Mohsen Mehrabi, Simindokht Shirvani Arani, Ali Bahrami Samani, Mostafa Erfani, Sara Vosoghi, Mohammad Ghannadi Maragheh, Mojtaba Shamsaei
In this study, the radiocomplexation of risedronic acid, a potent bisphosphonate with a no carrier added (NCA) (177) Lu, was investigated and followed by quality control studies, biodistribution evaluation, and dosimetry study for human based on biodistribution data in Wistar rats. The moderate energy β(-) emitter, (177) Lu (T½  = 6.7 days, Eβmax  = 497 keV), has been considered as a potential agent for development of bone-seeking radiopharmaceuticals. Because the specific activity of the radiolabeled carrier molecules should be high, the NCA radionuclides have an effective role in nuclear medicine...
November 15, 2016: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/27857327/airborne-forward-pointing-uv-rayleigh-lidar-for-remote-clear-air-turbulence-detection-system-design-and-performance
#17
Patrick Vrancken, Martin Wirth, Gerhard Ehret, Hervé Barny, Philippe Rondeau, Henk Veerman
A high-performance airborne UV Rayleigh lidar system was developed within the European project DELICAT. With its forward-pointing architecture, it aims at demonstrating a novel detection scheme for clear air turbulence (CAT) for an aeronautics safety application. Due to its occurrence in clear and clean air at high altitudes (aviation cruise flight level), this type of turbulence evades microwave radar techniques and in most cases coherent Doppler lidar techniques. The present lidar detection technique relies on air density fluctuation measurement and is thus independent of backscatter from hydrometeors and aerosol particles...
November 10, 2016: Applied Optics
https://www.readbyqxmd.com/read/27854356/detection-of-multiple-stationary-humans-using-uwb-mimo-radar
#18
Fulai Liang, Fugui Qi, Qiang An, Hao Lv, Fuming Chen, Zhao Li, Jianqi Wang
Remarkable progress has been achieved in the detection of single stationary human. However, restricted by the mutual interference of multiple humans (e.g., strong sidelobes of the torsos and the shadow effect), detection and localization of the multiple stationary humans remains a huge challenge. In this paper, ultra-wideband (UWB) multiple-input and multiple-output (MIMO) radar is exploited to improve the detection performance of multiple stationary humans for its multiple sight angles and high-resolution two-dimensional imaging capacity...
November 16, 2016: Sensors
https://www.readbyqxmd.com/read/27853467/low-probability-of-intercept-based-adaptive-radar-waveform-optimization-in-signal-dependent-clutter-for-joint-radar-and-cellular-communication-systems
#19
Chenguang Shi, Sana Salous, Fei Wang, Jianjiang Zhou
In this paper, we investigate the problem of low probability of intercept (LPI)-based adaptive radar waveform optimization in signal-dependent clutter for joint radar and cellular communication systems, where the radar system optimizes the transmitted waveform such that the interference caused to the cellular communication systems is strictly controlled. Assuming that the precise knowledge of the target spectra, the power spectral densities (PSDs) of signal-dependent clutters, the propagation losses of corresponding channels and the communication signals is known by the radar, three different LPI based criteria for radar waveform optimization are proposed to minimize the total transmitted power of the radar system by optimizing the multicarrier radar waveform with a predefined signal-to-interference-plus-noise ratio (SINR) constraint and a minimum required capacity for the cellular communication systems...
2016: EURASIP Journal on Advances in Signal Processing
https://www.readbyqxmd.com/read/27845763/the-chemistry-and-pharmacology-of-citrus-limonoids
#20
REVIEW
Roberta Gualdani, Maria Maddalena Cavalluzzi, Giovanni Lentini, Solomon Habtemariam
Citrus limonoids (CLs) are a group of highly oxygenated terpenoid secondary metabolites found mostly in the seeds, fruits and peel tissues of citrus fruits such as lemons, limes, oranges, pumellos, grapefruits, bergamots, and mandarins. Represented by limonin, the aglycones and glycosides of CLs have shown to display numerous pharmacological activities including anticancer, antimicrobial, antioxidant, antidiabetic and insecticidal among others. In this review, the chemistry and pharmacology of CLs are systematically scrutinised through the use of medicinal chemistry tools and structure-activity relationship approach...
November 13, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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