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https://www.readbyqxmd.com/read/28646506/three-lessons-for-genetic-toxicology-from-baseball-analytics
#1
EDITORIAL
Stephen D Dertinger
In many respects the evolution of baseball statistics mirrors advances made in the field of genetic toxicology. From its inception, baseball and statistics have been inextricably linked. Generations of players and fans have used a number of relatively simple measurements to describe team and individual player's current performance, as well as for historical record-keeping purposes. Over the years, baseball analytics has progressed in several important ways. Early advances were based on deriving more meaningful metrics from simpler forerunners...
June 24, 2017: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/28644809/structured-kernel-dictionary-learning-with-correlation-constraint-for-object-recognition
#2
Zhengjue Wang, Yinghua Wang, Hongwei Liu, Hao Zhang
In this paper, we propose a new discriminative non-linear dictionary learning approach, called correlation constrained structured kernel KSVD, for object recognition. The objective function for dictionary learning contains a reconstructive term and a discriminative term. In the reconstructive term, signals are implicitly non-linearly mapped into a space, where a structured kernel dictionary, each sub-dictionary of which lies in the span of the mapped signals from the corresponding class, is established. In the discriminative term, by analyzing the classification mechanism, the correlation constraint is proposed in kernel form, constraining the correlations between different discriminative codes, and restricting the coefficient vectors to be transformed into a feature space, where the features are highly correlated inner-class and nearly independent between-classes...
June 21, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28629157/wuhan-ionospheric-oblique-backscattering-sounding-system-and-its-applications-a-review
#3
REVIEW
Shuzhu Shi, Guobin Yang, Chunhua Jiang, Yuannong Zhang, Zhengyu Zhao
For decades, high-frequency (HF) radar has played an important role in sensing the Earth's environment. Advances in radar technology are providing opportunities to significantly improve the performance of HF radar, and to introduce more applications. This paper presents a low-power, small-size, and multifunctional HF radar developed by the Ionospheric Laboratory of Wuhan University, referred to as the Wuhan Ionospheric Oblique Backscattering Sounding System (WIOBSS). Progress in the development of this radar is described in detail, including the basic principles of operation, the system configuration, the sounding waveforms, and the signal and data processing methods...
June 18, 2017: Sensors
https://www.readbyqxmd.com/read/28629140/3d-imaging-millimeter-wave-circular-synthetic-aperture-radar
#4
Renyuan Zhang, Siyang Cao
In this paper, a new millimeter wave 3D imaging radar is proposed. The user just needs to move the radar along a circular track, and high resolution 3D imaging can be generated. The proposed radar uses the movement of itself to synthesize a large aperture in both the azimuth and elevation directions. It can utilize inverse Radon transform to resolve 3D imaging. To improve the sensing result, the compressed sensing approach is further investigated. The simulation and experimental result further illustrated the design...
June 17, 2017: Sensors
https://www.readbyqxmd.com/read/28618845/evaluation-of-cognitive-and-social-functioning-in-patients-requiring-long-term-inpatient-psychiatric-care-using-the-international-classification-of-functioning-disability-and-health-a-large-scale-multi-institutional-observational-study
#5
Hideaki Kawaguchi, Masamoto Taguchi, Masune Sukigara, Shoji Sakuragi, Naoya Sugiyama, Hisomu Chiba, Tatsuhito Kawasaki
PURPOSE: We comprehensively evaluated cognitive and social functioning in patients requiring long-term inpatient psychiatric care using the International Classification of Functioning, Disability, and Health. METHOD: We surveyed 1967 patients receiving long-term inpatient psychiatric care. Patients were further categorized into an old long-stay group (n = 892, >5 years in hospitals) and a new long-stay group (n = 1075, 1-5 years in hospitals). We obtained responses for all the International Classification of Functioning, Disability, and Health items in domain b (Body Functions) and domain d (Activities and Participation)...
June 15, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28615620/understanding-saturation-of-radar-signals-over-forests
#6
Neha Joshi, Edward T A Mitchard, Matthew Brolly, Johannes Schumacher, Alfredo Fernández-Landa, Vivian Kvist Johannsen, Miguel Marchamalo, Rasmus Fensholt
There is an urgent need to quantify anthropogenic influence on forest carbon stocks. Using satellite-based radar imagery for such purposes has been challenged by the apparent loss of signal sensitivity to changes in forest aboveground volume (AGV) above a certain 'saturation' point. The causes of saturation are debated and often inadequately addressed, posing a major limitation to mapping AGV with the latest radar satellites. Using ground- and lidar-measurements across La Rioja province (Spain) and Denmark, we investigate how various properties of forest structure (average stem height, size and number density; proportion of canopy and understory cover) simultaneously influence radar backscatter...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28613260/joint-optimization-of-receiver-placement-and-illuminator-selection-for-a-multiband-passive-radar-network
#7
Rui Xie, Xianrong Wan, Sheng Hong, Jianxin Yi
The performance of a passive radar network can be greatly improved by an optimal radar network structure. Generally, radar network structure optimization consists of two aspects, namely the placement of receivers in suitable places and selection of appropriate illuminators. The present study investigates issues concerning the joint optimization of receiver placement and illuminator selection for a passive radar network. Firstly, the required radar cross section (RCS) for target detection is chosen as the performance metric, and the joint optimization model boils down to the partition p-center problem (PPCP)...
June 14, 2017: Sensors
https://www.readbyqxmd.com/read/28613174/mulog-or-how-to-apply-gaussian-denoisers-to-multi-channel-sar-speckle-reduction
#8
Charles-Alban Deledalle, Loic Denis, Sonia Tabti, Florence Tupin
Speckle reduction is a longstanding topic in synthetic aperture radar (SAR) imaging. Since most current and planned SAR imaging satellites operate in polarimetric, interferometric or tomographic modes, SAR images are multi-channel and speckle reduction techniques must jointly process all channels to recover polarimetric and interferometric information. The distinctive nature of SAR signal (complex-valued, corrupted by multiplicative fluctuations) calls for the development of specialized methods for speckle reduction...
June 8, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28607218/improved-signal-recovery-for-flow-cytometry-based-on-spatially-modulated-emission
#9
Stephan Quint, Jörn Wittek, Peter Spang, Nadav Levanon, T Walther, Michael Baßler
Recently, the technique of `spatially modulated emission' has been introduced which improves the signal-to-noise ratio (SNR) for detecting biological cells in the field of flow cytometry. Based on this concept, we developed two advanced signal processing methods which further enhance the SNR and selectivity for cell detection. The improvements are achieved by adapting digital filtering methods from RADAR technology and mainly address inherent offset elimination, increased signal dynamics and moreover reduction of erroneous detections due to processing artifacts...
June 13, 2017: Methods and Applications in Fluorescence
https://www.readbyqxmd.com/read/28604583/a-sparse-bayesian-approach-for-forward-looking-superresolution-radar-imaging
#10
Yin Zhang, Yongchao Zhang, Yulin Huang, Jianyu Yang
This paper presents a sparse superresolution approach for high cross-range resolution imaging of forward-looking scanning radar based on the Bayesian criterion. First, a novel forward-looking signal model is established as the product of the measurement matrix and the cross-range target distribution, which is more accurate than the conventional convolution model. Then, based on the Bayesian criterion, the widely-used sparse regularization is considered as the penalty term to recover the target distribution...
June 10, 2017: Sensors
https://www.readbyqxmd.com/read/28604065/using-radar-plots-to-demonstrate-the-accuracy-and-precision-of-6-blood-glucose-monitoring-systems
#11
Scott Pardo, Nancy Dunne, David A Simmons
BACKGROUND: Previously, fingertip capillary blood glucose measurements from the CONTOUR(®)NEXT (CN) blood glucose monitoring system (BGMS) and 5 other BGMSs were evaluated in comparison with measurements from a reference YSI glucose analyzer. Here, we use Radar Plots to graphically represent the accuracy and precision results from the previous study, including whether they met ISO 15197:2013 accuracy criteria. METHOD: A Radar Plot, a new method for capturing a distinct, single visualization of BGMS analytical performance, is a collection of concentric circles, each representing a particular magnitude of error...
June 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28599567/the-stochastic-cram%C3%A3-r-rao-bound-for-source-localization-and-medium-tomography-using-vector-sensors
#12
Arthur B Baggeroer
A direct version for the stochastic Cramér-Rao bound (CRB) for parameters of Gaussian signals with additive Gaussian noise is introduced. The formulation applies to passive and active radars/sonars/seismics/structures with vector observations from multiple sources. These sensors include pressure, vector velocity, and/or acceleration sensors for ocean and structural acoustics, seismometers, polarized receivers for electromagnetics, and vector current meters for oceanography. The observations may contain partially coherent signals such as multipath...
May 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28598528/use-of-radar-detectors-to-track-attendance-of-albatrosses-at-fishing-vessels
#13
H Weimerskirch, D P Filippi, J Collet, S M Waugh, S C Patrick
Despite international waters covering over 60% of the world's oceans, our understanding of how fisheries in these regions shape ecosystem processes is surprisingly poor. Seabirds are known to forage at fishing vessels, with potential deleterious effects for their population, but the extent of overlap and behavior in relation to ships are poorly known. Using novel biologging devices, which can detect radar emissions to record the position of boats and seabirds, we measured the true extent of the overlap between seabirds and fishing vessels, and generated estimates of the intensity of fishing and distribution of vessels in international waters...
June 9, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/28594908/distribution-and-drivers-of-global-mangrove-forest-change-1996-2010
#14
Nathan Thomas, Richard Lucas, Peter Bunting, Andrew Hardy, Ake Rosenqvist, Marc Simard
For the period 1996-2010, we provide the first indication of the drivers behind mangrove land cover and land use change across the (pan-)tropics using time-series Japanese Earth Resources Satellite (JERS-1) Synthetic Aperture Radar (SAR) and Advanced Land Observing Satellite (ALOS) Phased Array-type L-band SAR (PALSAR) data. Multi-temporal radar mosaics were manually interpreted for evidence of loss and gain in forest extent and its associated driver. Mangrove loss as a consequence of human activities was observed across their entire range...
2017: PloS One
https://www.readbyqxmd.com/read/28593601/how-competent-are-adolescent-bullying-perpetrators-and-victims-in-mastering-normative-developmental-tasks-in-early-adulthood
#15
Tina Kretschmer, René Veenstra, Susan Branje, Sijmen A Reijneveld, Wim H J Meeus, Maja Deković, Hans M Koot, Wilma A M Vollebergh, Albertine J Oldehinkel
A substantive body of literature suggests that those involved in bullying as perpetrators but particularly victims are at greater risk for psychological maladjustment. In comparison, relatively little is known about associations between bullying-victimization and perpetration and mastery of early adult tasks in domains including romantic relationships, education, work, financial competence, and conduct. These links were tested using data from two Dutch cohorts (RADAR-young, n = 497, 43% girls; TRAILS, n = 2230, 51% girls) who reported on victimization and perpetration at age 11 (TRAILS) and 13 (RADAR-young) and mastery of developmental tasks in early adulthood...
June 8, 2017: Journal of Abnormal Child Psychology
https://www.readbyqxmd.com/read/28587066/mapping-winter-wheat-with-multi-temporal-sar-and-optical-images-in-an-urban-agricultural-region
#16
Tao Zhou, Jianjun Pan, Peiyu Zhang, Shanbao Wei, Tao Han
Winter wheat is the second largest food crop in China. It is important to obtain reliable winter wheat acreage to guarantee the food security for the most populous country in the world. This paper focuses on assessing the feasibility of in-season winter wheat mapping and investigating potential classification improvement by using SAR (Synthetic Aperture Radar) images, optical images, and the integration of both types of data in urban agricultural regions with complex planting structures in Southern China. Both SAR (Sentinel-1A) and optical (Landsat-8) data were acquired, and classification using different combinations of Sentinel-1A-derived information and optical images was performed using a support vector machine (SVM) and a random forest (RF) method...
May 25, 2017: Sensors
https://www.readbyqxmd.com/read/28584321/occupational-exposure-to-electromagnetic-fields-in-the-polish-armed-forces
#17
Jaromir Sobiech, Jarosław Kieliszek, Robert Puta, Dagmara Bartczak, Wanda Stankiewicz
OBJECTIVES: Standard devices used by military personnel that may pose electromagnetic hazard include: radars, missile systems, radio navigation systems and radio transceivers. The aim of this study has been to evaluate the exposure of military personnel to electromagnetic fields. MATERIAL AND METHODS: Occupational exposure to electromagnetic fields was analyzed in the work environment of personnel of 204 devices divided into 5 groups (surface-to-air missile system radars, aircraft and helicopters, communication devices, surveillance and height finder radars, airport radars and radio navigation systems)...
April 28, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28584119/stratospheric-ozone-over-the-united-states-in-summer-linked-to-observations-of-convection-and-temperature-via-chlorine-and-bromine-catalysis
#18
James G Anderson, Debra K Weisenstein, Kenneth P Bowman, Cameron R Homeyer, Jessica B Smith, David M Wilmouth, David S Sayres, J Eric Klobas, Stephen S Leroy, John A Dykema, Steven C Wofsy
We present observations defining (i) the frequency and depth of convective penetration of water into the stratosphere over the United States in summer using the Next-Generation Radar system; (ii) the altitude-dependent distribution of inorganic chlorine established in the same coordinate system as the radar observations; (iii) the high resolution temperature structure in the stratosphere over the United States in summer that resolves spatial and structural variability, including the impact of gravity waves; and (iv) the resulting amplification in the catalytic loss rates of ozone for the dominant halogen, hydrogen, and nitrogen catalytic cycles...
June 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28578234/the-sky-is-falling-iii-the-effect-of-deposition-from-static-solid-rocket-motor-tests-on-juvenile-crops
#19
William J Doucette, Eric Curry, Laurie S McNeill, Justin Heavilin
A mixture of combustion products (mainly hydrogen chloride, aluminum oxide, and water) and entrained soil, referred to as Test Fire Soil (TFS), can be deposited on crops during static solid rocket motor tests. The impact of a reported worst-case event was previously evaluated by exposing corn and alfalfa to 3200-gTFS/m(2) at 54days after emergence. Exposures via soil and leaves were evaluated separately. Reduced growth (soil exposure) and leaf "scorch" (leaf exposure) were attributed mainly to the high chloride concentrations in the TFS (56,000mg/kg)...
May 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28576322/accuracy-in-precordial-ecg-lead-placement-improving-performance-through-a-peer-led-educational-intervention
#20
Samar A Medani, Mark Hensey, Norma Caples, Patrick Owens
BACKGROUND AND OBJECTIVES: Inaccurate electrocardiography (ECG) lead placement may lead to erroneous diagnoses, such as poor R wave progression. We sought to assess the accuracy of precordial ECG lead placement amongst hospital staff members, and to re-evaluate performance after an educational intervention. METHODS AND RESULTS: 100 randomly selected eligible staff members placed sticker dots on a mannequin, their positions were recorded on a radar plot and compared to the correct precordial lead positions...
May 16, 2017: Journal of Electrocardiology
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