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https://www.readbyqxmd.com/read/29914205/adaptive-maximum-correntropy-gaussian-filter-based-on-variational-bayes
#1
Guoqing Wang, Zhongxing Gao, Yonggang Zhang, Bin Ma
In this paper, we investigate the state estimation of systems with unknown covariance non-Gaussian measurement noise. A novel improved Gaussian filter (GF) is proposed, where the maximum correntropy criterion (MCC) is used to suppress the pollution of non-Gaussian measurement noise and its covariance is online estimated through the variational Bayes (VB) approximation. MCC and VB are integrated through the fixed-point iteration to modify the estimated measurement noise covariance. As a general framework, the proposed algorithm is applicable to both linear and nonlinear systems with different rules being used to calculate the Gaussian integrals...
June 17, 2018: Sensors
https://www.readbyqxmd.com/read/29912920/sensitive-operation-of-enzyme-based-biodevices-by-advanced-signal-processing
#2
Stanislav Mazurenko, Sarka Bidmanova, Marketa Kotlanova, Jiri Damborsky, Zbynek Prokop
Analytical devices that combine sensitive biological component with a physicochemical detector hold a great potential for various applications, e.g., environmental monitoring, food analysis or medical diagnostics. Continuous efforts to develop inexpensive sensitive biodevices for detecting target substances typically focus on the design of biorecognition elements and their physical implementation, while the methods for processing signals generated by such devices have received far less attention. Here, we present fundamental considerations related to signal processing in biosensor design and investigate how undemanding signal treatment facilitates calibration and operation of enzyme-based biodevices...
2018: PloS One
https://www.readbyqxmd.com/read/29909174/road-traffic-noise-air-pollution-and-risk-of-dementia-results-from-the-betula-project
#3
John Andersson, Anna Oudin, Anna Sundström, Bertil Forsberg, Rolf Adolfsson, Maria Nordin
BACKGROUND: There is growing evidence for a negative impact of traffic-related air pollution on risk of dementia. However, the contribution of noise exposure to this association has been rarely examined. OBJECTIVE: We aimed to investigate the individual and combined effect of noise and air pollution on risk of dementia. METHODS: Data on dementia incidence over a 15 year period was obtained from the Betula project, a longitudinal study on health and ageing...
June 14, 2018: Environmental Research
https://www.readbyqxmd.com/read/29900283/data-on-the-effect-of-lead-concomitant-noise-on-oxidative-stress-in-rats
#4
Batol Masruri, Azadeh Ashtarinezhad, Parvaneh Yekzamani
Exposure to chemical and physical factors occur in many occupations. Exposure to ambient pollutants such as noise, heavy metals, drugs enhance free radicals and can cause oxidative stress. The aim of the present project was to investigate noise and lead as two workplace stressors in rats. 20 male rats were assigned into 4 groups randomly. Rats in control group was not exposed to any stressor agent, while the first group was exposed to noise (105 dB, 4 kHz), the second group was exposed to lead acetate (gavage,4 mg/kg), and the last group was exposed to both lead and noise...
June 2018: Data in Brief
https://www.readbyqxmd.com/read/29899375/echoes-from-gaea-poseidon-hephaestus-and-prometheus-environmental-risk-factors-for-high-blood-pressure
#5
Prateek Sharma, Robert D Brook
High blood pressure (BP) affects over one billion people and is the leading risk factor for global mortality. While many lifestyle and genetic risk factors are well-accepted to increase BP, the role of the external environment is typically overlooked. Mounting evidence now supports that numerous environmental factors can promote an elevation in BP. Broadly speaking these include aspects of the natural environment (e.g., cold temperatures, higher altitude, and winter season), natural disasters (e.g., earthquakes, volcanic eruptions), and man-made exposures (e...
June 13, 2018: Journal of Human Hypertension
https://www.readbyqxmd.com/read/29896813/cardiovascular-benefits-of-reducing-personal-exposure-to-traffic-related-noise-and-particulate-air-pollution-a-randomized-crossover-study-in-the-beijing-subway-system
#6
Xuan Yang, Xu Jia, Wei Dong, Shaowei Wu, Mark R Miller, Dayu Hu, Hongyu Li, Lu Pan, Furong Deng, Xinbiao Guo
To assess the cardiovascular benefits of protecting against particulate air pollution and noise, we conducted a randomized crossover study with 40 young healthy college students from March to May 2017 in the underground subway, Beijing. Participants each received four treatments [no intervention phase (NIP), respirator intervention phase (RIP), headphone intervention phase (HIP), respirator plus headphone intervention phase (RHIP)] in a randomized order during four different study periods with two-week washout intervals...
June 13, 2018: Indoor Air
https://www.readbyqxmd.com/read/29890427/multiple-pathways-link-urban-green-and-bluespace-to-mental-health-in-young-adults
#7
Angel M Dzhambov, Iana Markevych, Terry Hartig, Boris Tilov, Zlatoslav Arabadzhiev, Drozdstoj Stoyanov, Penka Gatseva, Donka D Dimitrova
BACKGROUND: A growing body of scientific literature indicates that urban green- and bluespace support mental health; however, little research has attempted to address the complexities in likely interrelations among the pathways through which benefits plausibly are realized. OBJECTIVES: The present study examines how different plausible pathways between green/bluespace and mental health can work together. Both objective and perceived measures of green- and bluespace are used in these models...
June 8, 2018: Environmental Research
https://www.readbyqxmd.com/read/29886986/an-adaptive-grid-to-improve-the-efficiency-and-accuracy-of-modelling-underwater-noise-from-shipping
#8
Leah E Trigg, Feng Chen, Georgy I Shapiro, Simon N Ingram, Clare B Embling
Underwater noise pollution from shipping is a significant ecological concern. Acoustic propagation models are essential to predict noise levels and inform management activities to safeguard ecosystems. However, these models can be computationally expensive to execute. To increase computational efficiency, ships are spatially partitioned using grids but the cell size is often arbitrary. This work presents an adaptive grid where cell size varies with distance from the receiver to increase computational efficiency and accuracy...
June 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29883873/modeling-species-richness-and-abundance-of-phytoplankton-and-zooplankton-in-radioactively-contaminated-water-bodies
#9
Igor Shuryak
Water bodies polluted by the Mayak nuclear plant in Russia provide valuable information on multi-generation effects of radioactive contamination on freshwater organisms. For example, lake Karachay was probably the most radioactive lake in the world: its water contained ∼2 × 107 Bq/L of radionuclides and estimated dose rates to plankton exceeded 5 Gy/h. We performed quantitative modeling of radiation effects on phytoplankton and zooplankton species richness and abundance in Mayak-contaminated water bodies...
June 5, 2018: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29804251/the-possible-effects-of-anthropogenic-acoustic-pollution-on-marine-mammals-reproduction-an-emerging-threat-to-animal-extinction
#10
Ghulam Nabi, Richard William McLaughlin, Yujiang Hao, Kexiong Wang, Xianyuan Zeng, Suliman Khan, Ding Wang
For about 119 species of cetaceans and other aquatic animals, sound is the key source of learning about the environment, navigation, communication, foraging, and avoiding predators. However, in the recent era, the introduction of large quantities of anthropogenic noise into the ocean has significantly altered the ocean's acoustic environment. The anthropogenic noises travel very long distances, blanketing enormous areas. This can affect cetaceans, either by direct killing or compromising hearing, navigation, communication, predation, as well as normal behaviors...
May 26, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29789670/noise-estimation-model-development-using-high-resolution-transportation-and-land-use-regression
#11
Omer Harouvi, Eran Ben-Elia, Roni Factor, Kees de Hoogh, Itai Kloog
Noise pollution is a common phenomenon of the 21st century. Noise prediction models tend to estimate noise levels mainly from road traffic sources (such as cars, public transportation etc.). This paper describes the adoption of land use regression (LUR) modeling methodology to assess noise pollution in two periods of the day (rush hour and off-peak), in two major cities in Israel (Tel Aviv and Beer Sheva). For both rush hour and off-peak times, 20 min short term measurements were used to develop a LUR noise estimation model...
May 23, 2018: Journal of Exposure Science & Environmental Epidemiology
https://www.readbyqxmd.com/read/29785974/railway-noise-annoyance-on-the-railway-track-in-northwest-slovakia
#12
Alzbeta Pultznerova, Panulinova Eva, Daniela Kucharova, Lubica Argalasova
Introduction: This paper describes an assessment of noise caused by railway traffic in a large high-loaded railway track in Northwest Slovakia. Materials and Methods: The measurements of noise levels generated by trains passing through residential neighborhoods were taken. Noise maps were also calculated showing noise pollution generated by the train traffic. In addition, the annoyance level and sleep disturbance of residents affected by railway noise were evaluated by a validated questionnaire on a pilot sample of 107 respondents living near the important railway track...
May 2018: Noise & Health
https://www.readbyqxmd.com/read/29778684/modeled-and-perceived-rf-emf-noise-and-air-pollution-and-symptoms-in-a-population-cohort-is-perception-key-in-predicting-symptoms
#13
Astrid L Martens, Marije Reedijk, Tjabe Smid, Anke Huss, Danielle Timmermans, Maciej Strak, Wim Swart, Virissa Lenters, Hans Kromhout, Robert Verheij, Pauline Slottje, Roel C H Vermeulen
BACKGROUND: Psychosocial research has shown that perceived exposure can influence symptom reporting, regardless of actual exposure. The impact of this phenomenon on the interpretation of results from epidemiological research on environmental determinants of symptoms is unclear. OBJECTIVE: Our aim was to compare associations between modeled exposures, the perceived level of these exposures and reported symptoms (non-specific symptoms, sleep disturbances, and respiratory symptoms) for three different environmental exposures (radiofrequency electromagnetic fields (RF-EMF), noise, and air pollution)...
May 17, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29760398/urban-sparrows-respond-to-a-sexually-selected-trait-with-increased-aggression-in-noise
#14
Jennifer N Phillips, Elizabeth P Derryberry
Animals modify acoustic communication signals in response to noise pollution, but consequences of these modifications are unknown. Vocalizations that transmit best in noise may not be those that best signal male quality, leading to potential conflict between selection pressures. For example, slow paced, narrow bandwidth songs transmit better in noise but are less effective in mate choice and competition than fast paced, wide bandwidth songs. We test the hypothesis that noise affects response to song pace and bandwidth in the context of competition using white-crowned sparrows (Zonotrichia leucophrys)...
May 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29751402/dominant-frequency-of-songs-in-tropical-bird-species-is-higher-in-sites-with-high-noise-pollution
#15
Vitor Carneiro de Magalhães Tolentino, Camilla Queiroz Baesse, Celine de Melo
The structure and organization of acoustic signals arise through evolutionary processes and adaptive pressures on each species. During learning, natural or anthropogenic factors, such as high noise levels in urban areas, pose challenges to acoustic communication in birds. Many species adjust their acoustic signals to higher noise levels by increasing the frequency of vocalizations. The objectives of this study were to compare the dominant frequency of songs among birds dwelling in forest fragments distant from and near to urban areas, establish correlations between the dominant frequency of song and noise levels in these environments and verified the difference of response between oscines, suboscines and non-passerines...
April 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29744533/-epidemiological-studies-with-environmental-relevance-in-germany
#16
REVIEW
Alexandra Schneider, Regina Rückerl, Marie Standl, Iana Markevych, Barbara Hoffmann, Susanne Moebus, Karl-Heinz Jöckel, Alisa Weber, Caroline Herr, Annette Heißenhuber, Uta Nennstiel-Ratzel, Stefanie Heinze, Christine Schulz, Marike Kolossa-Gehring, Hildegard Niemann, Antje Gößwald, Tamara Schikowski, Anke Hüls, Dorothee Sugiri, Annette Peters
Our environment is a major factor in determining health and well-being throughout life, from conception into old age. This overview illustrates the most important epidemiological studies and health monitoring systems in Germany, which investigate environmental influences in various population subgroups and estimate related health effects. Environmental factors examined in each study are described. The mentioned studies in children and adults build the basis for predictions and preventive measures. The number of the assessed environmental factors, the depth of the examinations as well as the (phenotypical) characterization of the study participants differ...
May 9, 2018: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/29738463/determination-of-biogenic-amines-in-seawater-using-capillary-electrophoresis-with-capacitively-coupled-contactless-conductivity-detection
#17
Elbaleeq A Gubartallah, Ahmad Makahleh, Joselito P Quirino, Bahruddin Saad
A rapid and green analytical method based on capillary electrophoresis with capacitively coupled contactless conductivity detection (C⁴D) for the determination of eight environmental pollutants, the biogenic amines (putrescine, cadaverine, spermidine, spermine, tyramine, 2-phenylamine, histamine and tryptamine), is described. The separation was achieved under normal polarity mode at 24 °C and 25 kV with a hydrodynamic injection (50 mbar for 5 s) and using a bare fused-silica capillary (95 cm length × 50 µm i...
May 8, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29737508/-reduction-in-the-noise-pollution-within-residential-environments-what-has-been-achieved-so-far
#18
REVIEW
Regina Heinecke-Schmitt, Michael Jäcker-Cüppers, Dirk Schreckenberg
Surveys show that noise in its various forms is among the most severe environmental burdens. According to estimates of the World Health Organization (WHO), there is a loss of one million healthy life years per year in Europe due to the effects of environmental noise. This paper discusses the harmful effects of noise with the example of traffic noise, for which the highest number of environmental noise effect studies are available. An increasing number of studies show associations between traffic noise and vascular, metabolic and psychic diseases...
May 8, 2018: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/29717393/hypertension-in-developing-countries-a-major-challenge-for-the-future
#19
REVIEW
M Mohsen Ibrahim
PURPOSE OF REVIEW: Outline recent epidemiologic data regarding hypertension in developing countries, distinguish differences from developed countries, and identify challenges in management and future perspectives. RECENT FINDINGS: Increased sugar intake, air and noise pollution, and low birth weight are emerging hypertension risk factors. The major challenges in management are difficulties in accurate diagnosis of hypertension and adequate blood pressure control...
May 1, 2018: Current Hypertension Reports
https://www.readbyqxmd.com/read/29704672/environmental-noise-pollution-and-risk-of-preeclampsia
#20
Nathalie Auger, Mathilde Duplaix, Marianne Bilodeau-Bertrand, Ernest Lo, Audrey Smargiassi
BACKGROUND: Environmental noise exposure is associated with a greater risk of hypertension, but the link with preeclampsia, a hypertensive disorder of pregnancy, is unclear. OBJECTIVES: We sought to determine the relationship between environmental noise pollution and risk of preeclampsia during pregnancy. METHODS: We analyzed a population-based cohort comprising 269,263 deliveries on the island of Montreal, Canada between 2000 and 2013. We obtained total environmental noise pollution measurements (LAeq24 , Lden , Lnight ) from land use regression models, and assigned noise levels to each woman based on the residential postal code...
August 2018: Environmental Pollution
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