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https://www.readbyqxmd.com/read/28542717/calibration-of-a-land-subsidence-model-using-insar-data-via-the-ensemble-kalman-filter
#1
Liangping Li, Meijing Zhang, Kurt Katzenstein
The application of interferometric synthetic aperture radar (InSAR) has been increasingly used to improve capabilities to model land subsidence in hydrogeologic studies. A number of investigations over the last decade show how spatially detailed time-lapse images of ground displacements could be utilized to advance our understanding for better predictions. In this work, we use simulated land subsidences as observed measurements, mimicking InSAR data to inversely infer inelastic specific storage in a stochastic framework...
May 23, 2017: Ground Water
https://www.readbyqxmd.com/read/28541230/an-adaptive-particle-weighting-strategy-for-ecg-denoising-using-marginalized-particle-extended-kalman-filter-an-evaluation-in-arrhythmia-contexts
#2
Hamed Danandeh Hesar, Maryam Mohebbi
Model-based Bayesian frameworks have a common problem in processing electrocardiogram (ECG) signals with sudden morphological changes. This situation often happens in the case of arrhythmias where ECGs don't obey the predefined state models. To solve this problem, in this paper, a model-based Bayesian denoising framework is proposed using marginalized particle-extended Kalman filter (MP-EKF), Variational Mode Decomposition (VMD) and a novel fuzzy-based adaptive particle weighting strategy. This strategy helps MP-EKF to perform well even when the morphology of signal does not comply with the predefined dynamic model...
May 19, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28541188/a-variable-state-dimension-approach-to-meal-detection-and-meal-size-estimation-in-silico-evaluation-through-basal-bolus-insulin-therapy-for-type-1-diabetes
#3
Jinyu Xie, Qian Wang
OBJECTIVE: This paper aims to develop an algorithm that can detect unannounced meals and estimate meal sizes to achieve a robust glucose control. METHODS: A variable state dimension (VSD) algorithm is developed to detect unannounced meals and estimate meal sizes, where a Kalman filter operates on a quiescent state model when no meal is detected, and switches to a maneuvering state model to estimate meal information once the meal-induced glucose variability is statistically significant...
June 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28531135/aekf-slam-a-new-algorithm-for-robotic-underwater-navigation
#4
Xin Yuan, José-Fernán Martínez-Ortega, José Antonio Sánchez Fernández, Martina Eckert
In this work, we focus on key topics related to underwater Simultaneous Localization and Mapping (SLAM) applications. Moreover, a detailed review of major studies in the literature and our proposed solutions for addressing the problem are presented. The main goal of this paper is the enhancement of the accuracy and robustness of the SLAM-based navigation problem for underwater robotics with low computational costs. Therefore, we present a new method called AEKF-SLAM that employs an Augmented Extended Kalman Filter (AEKF)-based SLAM algorithm...
May 21, 2017: Sensors
https://www.readbyqxmd.com/read/28530545/synthesis-and-biological-evaluation-of-curcumin-nitroxide-based-molecular-hybrids-as-antioxidant-and-anti-proliferative-agents
#5
Balázs Bognár, Muthulakshmi Kuppusamy, Esha Madan, Tamás Kálai, Mária Balog, József Jekő, Periannan Kuppusamy, Kálmán Hideg
BACKGROUND: Natural products and their derivatives are widely used to treat cancer and other diseases associated with ROS- and RNS-induced damages. METHODS: A series of paramagnetic modified curcumin analogues and 3,5-diarylidene-piperidones (DAP) have been designed, synthesized, and characterized on their anti-proliferative and antioxidant activity. RESULTS: Biological characterization of the new compounds supported the earlier results that incorporation of a nitroxide moiety or its precursor into curcumin or diarylidenylpiperidone (DAP) scaffolds resulted in anti-proliferative effect toward cancerous cell-lines in case of aryl hydroxy and/or methoxy substituent containing derivatives suggesting their potential for targeted therapeutic applications...
May 22, 2017: Medicinal Chemistry
https://www.readbyqxmd.com/read/28525552/septally-located-left-atrial-hematoma-as-a-consequence-of-a-steam-pop
#6
Gábor Bencsik, Róbert Pap, Kálmán Havasi
No abstract text is available yet for this article.
May 19, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28512000/computed-tomography-ct-compatible-remote-center-of-motion-needle-steering-robot-fusing-ct-images-and-electromagnetic-sensor-data
#7
Navid Shahriari, Wout Heerink, Tim van Katwijk, Edsko Hekman, Matthijs Oudkerk, Sarthak Misra
Lung cancer is the most common cause of cancer-related death, and early detection can reduce the mortality rate. Patients with lung nodules greater than 10 mm usually undergo a computed tomography (CT)-guided biopsy. However, aligning the needle with the target is difficult and the needle tends to deflect from a straight path. In this work, we present a CT-compatible robotic system, which can both position the needle at the puncture point and also insert and rotate the needle. The robot has a remote-center-of-motion arm which is achieved through a parallel mechanism...
May 13, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28511658/global-kalman-filter-approaches-to-estimate-absolute-angles-of-lower-limb-segments
#8
Samuel L Nogueira, Stefan Lambrecht, Roberto S Inoue, Magdo Bortole, Arlindo N Montagnoli, Juan C Moreno, Eduardo Rocon, Marco H Terra, Adriano A G Siqueira, Jose L Pons
BACKGROUND: In this paper we propose the use of global Kalman filters (KFs) to estimate absolute angles of lower limb segments. Standard approaches adopt KFs to improve the performance of inertial sensors based on individual link configurations. In consequence, for a multi-body system like a lower limb exoskeleton, the inertial measurements of one link (e.g., the shank) are not taken into account in other link angle estimations (e.g., foot). Global KF approaches, on the other hand, correlate the collective contribution of all signals from lower limb segments observed in the state-space model through the filtering process...
May 16, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28506916/temporary-removal-2017-hrs-ehra-ecas-aphrs-solaece-expert-consensus-statement-on-catheter-and-surgical-ablation-of-atrial-fibrillation
#9
Hugh Calkins, Gerhard Hindricks, Riccardo Cappato, Young-Hoon Kim, Eduardo B Saad, Luis Aguinaga, Joseph G Akar, Vinay Badhwar, Josep Brugada, John Camm, Peng-Sheng Chen, Shih-Ann Chen, Mina K Chung, Jens Cosedis Nielsen, Anne B Curtis, D Wyn Davies, John D Day, André d'Avila, N M S Natasja de Groot, Luigi Di Biase, Mattias Duytschaever, James R Edgerton, Kenneth A Ellenbogen, Patrick T Ellinor, Sabine Ernst, Guilherme Fenelon, Edward P Gerstenfeld, David E Haines, Michel Haissaguerre, Robert H Helm, Elaine Hylek, Warren M Jackman, Jose Jalife, Jonathan M Kalman, Josef Kautzner, Hans Kottkamp, Karl Heinz Kuck, Koichiro Kumagai, Richard Lee, Thorsten Lewalter, Bruce D Lindsay, Laurent Macle, Moussa Mansour, Francis E Marchlinski, Gregory F Michaud, Hiroshi Nakagawa, Andrea Natale, Stanley Nattel, Ken Okumura, Douglas Packer, Evgeny Pokushalov, Matthew R Reynolds, Prashanthan Sanders, Mauricio Scanavacca, Richard Schilling, Claudio Tondo, Hsuan-Ming Tsao, Atul Verma, David J Wilber, Teiichi Yamane
The publisher regrets that this article has been temporarily removed. A replacement will appear as soon as possible in which the reason for the removal of the article will be specified, or the article will be reinstated. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
May 12, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28506677/controller-design-for-a-class-of-nonlinear-mimo-coupled-system-using-multiple-models-and-second-level-adaptation
#10
Vinay Kumar Pandey, Indrani Kar, Chitralekha Mahanta
In this paper, an adaptive control method using multiple models with second level adaptation is proposed for a class of nonlinear multi-input multi-output (MIMO) coupled systems. Multiple estimation models are used to tune the unknown parameters at the first level. The second level adaptation provides a single parameter vector for the controller. A feedback linearization technique is used to design a state feedback control. The efficacy of the designed controller is validated by conducting real time experiment on a laboratory setup of twin rotor MIMO system (TRMS)...
May 13, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28492479/fusion-based-on-visible-light-positioning-and-inertial-navigation-using-extended-kalman-filters
#11
Zhitian Li, Lihui Feng, Aiying Yang
With the rapid development of smart technology, the need for location-based services (LBS) increases every day. Since classical positioning technology such as GPS cannot satisfy the needs of indoor positioning, new indoor positioning technologies, such as Bluetooth, Wi-Fi, and Visible light communication (VLC), have already cut a figure. VLC positioning has been proposed because it has higher accuracy, costs less, and is easier to accomplish in comparison to the other indoor positioning technologies. However, the practicality of VLC positioning is limited since it is easily affected by multipath effects and the layout of LEDs...
May 11, 2017: Sensors
https://www.readbyqxmd.com/read/28489253/randomized-clinical-trial-comparing-collagen-plug-and-advancement-flap-for-trans-sphincteric-anal-fistula
#12
J Bondi, J Avdagic, U Karlbom, O Hallböök, D Kalman, J Šaltytė Benth, N Naimy, T Øresland
BACKGROUND: The role of a collagen plug for treating anal fistula is not well established. A randomized prospective multicentre non-inferiority study of surgical treatment of trans-sphincteric cryptogenic fistulas was undertaken, comparing the anal fistula plug with the mucosal advancement flap with regard to fistula recurrence rate and functional outcome. METHODS: Patients with an anal fistula were evaluated for eligibility in three centres, and randomized to either mucosal advancement flap surgery or collagen plug, with clinical follow-up at 3 and 12 months...
May 10, 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28483830/blood-pressure-control-in-atrial-fibrillation-one-of-many-critical-components-in-risk-factor-modification
#13
EDITORIAL
Dennis H Lau, Jeroen Hendriks, Jonathan M Kalman, Prashanthan Sanders
No abstract text is available yet for this article.
May 9, 2017: Circulation
https://www.readbyqxmd.com/read/28479513/epicardial-endocardial-breakthrough-during-stable-atrial-macro-reentry-evidence-from-ultra-high-resolution-three-dimensional-mapping-epicardial-endocardial-breakthrough-in-atrial-macro-reentry
#14
Bhupesh Pathik, Geoffrey Lee, Frédéric Sacher, Michel Haïssaguerre, Pierre Jaïs, Grégoire Massoullié, Nicolas Derval, Prashanthan Sanders, Peter Kistler, Jonathan M Kalman
BACKGROUND: Evidence for epicardial-endocardial breakthrough(EEB) is derived from mapping inferences in patients with AF who may also have focal activations. OBJECTIVES: We investigated whether EEB could be discerned during stable right atrial macro-reentry using high-density high-spatial resolution 3D mapping. METHODS: Macro-reentry was diagnosed using 3D mapping and entrainment. Bipolar maps were reviewed for EEB defined as (i)focal endocardial activation with radial spread unaccounted for by an endocardial wavefront and (ii)present with the same timing on every tachycardia cycle...
May 4, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28471618/a-retrospective-comparison-of-fecal-microbial-transplantation-methods-for-recurrent-clostridium-difficile-infection
#15
Nathaniel A Cohen, Dan M Livovsky, Shir Yaakobovitch, Merav Ben Yehoyada, Ronen Ben Ami, Amos Adler, Hanan Guzner-Gur, Eran Goldin, Moshe E Santo, Zamir Halpern, Kalman Paz, Nitsan Maharshak
BACKGROUND: Antibiotic treatment of Clostridium difficile infection (CDI) has a high failure rate. Fecal microbiota transplantation (FMT) has proven very effective in treating these recurrences. OBJECTIVES: To determine which method of fecal microbiota transplantation (upper or lower gastrointestinal) and which type of donor (a relative or unrelated) is superior. METHODS: This is a retrospective analysis of treatment protocols and outcomes in 22 patients with refractory or recurrent CDI who underwent FMT at two Israeli facilities...
October 2016: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28471587/clarithromycin-induced-mania-after-triple-therapy-for-the-eradication-of-helicobacter-pylori
#16
Bernardo Melamud, Shikma Keller, Mahmud Mahamid, Kalman Paz, Eran Goldin
No abstract text is available yet for this article.
August 2016: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28471402/adaptive-energy-efficient-target-detection-based-on-mobile-wireless-sensor-networks
#17
Tengyue Zou, Zhenjia Li, Shuyuan Li, Shouying Lin
Target detection is a widely used application for area surveillance, elder care, and fire alarms; its purpose is to find a particular object or event in a region of interest. Usually, fixed observing stations or static sensor nodes are arranged uniformly in the field. However, each part of the field has a different probability of being intruded upon; if an object suddenly enters an area with few guardian devices, a loss of detection will occur, and the stations in the safe areas will waste their energy for a long time without any discovery...
May 4, 2017: Sensors
https://www.readbyqxmd.com/read/28468252/sensor-fusion-based-on-an-integrated-neural-network-and-probability-density-function-pdf-dual-kalman-filter-for-on-line-estimation-of-vehicle-parameters-and-states
#18
Leandro Vargas-Melendez, Beatriz L Boada, Maria Jesus L Boada, Antonio Gauchia, Vicente Diaz
Vehicles with a high center of gravity (COG), such as light trucks and heavy vehicles, are prone to rollover. This kind of accident causes nearly 33 % of all deaths from passenger vehicle crashes. Nowadays, these vehicles are incorporating roll stability control (RSC) systems to improve their safety. Most of the RSC systems require the vehicle roll angle as a known input variable to predict the lateral load transfer. The vehicle roll angle can be directly measured by a dual antenna global positioning system (GPS), but it is expensive...
April 29, 2017: Sensors
https://www.readbyqxmd.com/read/28465212/cell-culture-media-supplemented-with-raffinose-reproducibly-enhances-high-mannose-glycan-formation
#19
David Brühlmann, Anais Muhr, Rebecca Parker, Thomas Vuillemin, Blanka Bucsella, Franka Kalman, Serena Torre, Fabio La Neve, Antonio Lembo, Tobias Haas, Markus Sauer, Jonathan Souquet, Hervé Broly, Jürgen Hemberger, Martin Jordan
Glycosylation plays a pivotal role in pharmacokinetics and protein physiochemical characteristics. In particular, effector functions including antibody-dependent cell-mediated cytotoxicity (ADCC) can be desired, and it has been described that high-mannose species exhibited enhanced ADCC. In this work we present the trisaccharide raffinose as a novel cell culture medium supplement to promote high mannose N-glycans in fed-batch cultures, which is sought after in the development of biosimilars to match the quality profile of the reference medicinal product (RMP) also...
April 29, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28464938/quiescence-of-human-muscle-stem-cells-is-favored-by-culture-on-natural-biopolymeric-films
#20
Claire Monge, Nicholas DiStasio, Thomas Rossi, Muriel Sébastien, Hiroshi Sakai, Benoit Kalman, Thomas Boudou, Shahragim Tajbakhsh, Isabelle Marty, Anne Bigot, Vincent Mouly, Catherine Picart
BACKGROUND: Satellite cells are quiescent resident muscle stem cells that present an important potential to regenerate damaged tissue. However, this potential is diminished once they are removed from their niche environment in vivo, prohibiting the long-term study and genetic investigation of these cells. This study therefore aimed to provide a novel biomaterial platform for the in-vitro culture of human satellite cells that maintains their stem-like quiescent state, an important step for cell therapeutic studies...
May 2, 2017: Stem Cell Research & Therapy
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