30397
2023
eng
4
11
article
1
--
2023-02-13
--
On-orbit verification of RL-based APC calibrations for micrometre level microwave ranging system
Micrometre level ranging accuracy between satellites on-orbit relies on the high-precision calibration of the antenna phase center (APC), which is accomplished through properly designed calibration maneuvers batch estimation algorithms currently. However, the unmodeled perturbations of the space dynamic and sensor-induced uncertainty complicated the situation in reality; ranging accuracy especially deteriorated outside the antenna main-lobe when maneuvers performed. This paper proposes an on-orbit APC calibration method that uses a reinforcement learning (RL) process, aiming to provide the high accuracy ranging datum for onboard instruments with micrometre level. The RL process used here is an improved Temporal Difference advantage actor critic algorithm (TDAAC), which mainly focuses on two neural networks (NN) for critic and actor function. The output of the TDAAC algorithm will autonomously balance the APC calibration maneuvers amplitude and APC-observed sensitivity with an object of maximal APC estimation accuracy. The RL-based APC calibration method proposed here is fully tested in software and on-ground experiments, with an APC calibration accuracy of less than 2 mrad, and the on-orbit maneuver data from 11–12 April 2022, which achieved 1–1.5 mrad calibration accuracy after RL training. The proposed RL-based APC algorithm may extend to prove mass calibration scenes with actions feedback to attitude determination and control system (ADCS), showing flexibility of spacecraft payload applications in the future.
Mathematics
2227-7390
10.3390/math11040942
urn:nbn:de:bvb:20-opus-303970
2023-03-14T05:52:43+00:00
sword
swordwue
attachment; filename=deposit.zip
072072cb0c636625ed6e532774c56035
Mathematics (2023) 11:4, 942. https://doi.org/10.3390/math11040942
false
true
CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International
Xiaoliang Wang
Xuan Liu
Yun Xiao
Yue Mao
Nan Wang
Wei Wang
Shufan Wu
Xiaoyong Song
Dengfeng Wang
Xingwang Zhong
Zhu Zhu
Klaus Schilling
Christopher Damaren
eng
uncontrolled
reinforcement learning
eng
uncontrolled
antenna phase center calibration
eng
uncontrolled
K band ranging (KBR)
eng
uncontrolled
micrometre level microwave ranging
eng
uncontrolled
MSC: 49M37
eng
uncontrolled
MSC: 65K05
eng
uncontrolled
MSC: 90C30
eng
uncontrolled
MSC: 90C40
Mathematik
Astronomie und zugeordnete Wissenschaften
open_access
Institut für Informatik
Import
Universität Würzburg
https://opus.bibliothek.uni-wuerzburg.de/files/30397/mathematics-11-00942.pdf
13848
2015
eng
2843-2850
21
128
article
1
2016-09-19
--
--
Prevalence of Nontraumatic Osteonecrosis of the Femoral Head and its Associated Risk Factors in the Chinese Population: Results from a Nationally Representative Survey
Background: Nontraumatic osteonecrosis of the femoral head (NONFH) is a debilitating disease that represents a significant financial burden for both individuals and healthcare systems. Despite its significance, however, its prevalence in the Chinese general population remains unknown. This study aimed to investigate the prevalence of NONFH and its associated risk factors in the Chinese population.
Methods: A nationally representative survey of 30,030 respondents was undertaken from June 2012 to August 2013. All participants underwent a questionnaire investigation, physical examination of hip, and bilateral hip joint X-ray and/or magnetic resonance imaging examination. Blood samples were taken after overnight fasting to test serum total cholesterol, triglyceride, and high-density lipoprotein (HDL) and low-density lipoprotein (LDL) levels. We then used multivariate logistic regression analysis to investigate the associations between various metabolic, demographic, and lifestyle-related variables and NONFH.
Results: NONFH was diagnosed in 218 subjects (0.725%) and the estimated NONFH cases were 8.12 million among Chinese people aged 15 years and over. The prevalence of NONFH was significantly higher in males than in females (1.02% vs. 0.51%, \(\chi^2\) = 24.997, P < 0.001). Among NONFH patients, North residents were subjected to higher prevalence of NONFH than that of South residents (0.85% vs. 0.61%, \(\chi^2\) = 5.847, P = 0.016). Our multivariate regression analysis showed that high blood levels of triglycerides, total cholesterol, LDL-cholesterol, and non-HDL-cholesterol, male, urban residence, family history of osteonecrosis of the femoral head, heavy smoking, alcohol abuse and glucocorticoid intake, overweight, and obesity were all significantly associated with an increased risk of NONFH.
Conclusions: Our findings highlight that NONFH is a significant public health challenge in China and underscore the need for policy measures on the national level. Furthermore, NONFH shares a number of risk factors with atherosclerosis.
Chinese Medical Journal
10.4103/0366-6999.168017
urn:nbn:de:bvb:20-opus-138482
Chinese Medical Journal 128, 21 (2015), pp. 2843-2850. doi:10.4103/0366-6999.168017
De-Wei Zhao
Mang Yu
Kai Hu
Wei Wang
Lei Yang
Ben-Jie Wang
Xiao-Hong Gao
Yong-Ming Guo
Yong-Qing Xu
Yu-Shan Wei
Si-Miao Tian
Fan Yang
Nan Wang
Shi-Bo Huang
Hui Xie
Xiao-Wei Wei
Hai-Shen Jiang
Yu-Qiang Zang
Jun Ai
Yuan-Liang Chen
Guang-Hua Lei
Yu-Jin Li
Geng Tian
Zong-Sheng Li
Yong Cao
Li Ma
eng
uncontrolled
nontraumatic osteonecrosis of the femoral head
eng
uncontrolled
risk factors
eng
uncontrolled
idiopathic osteonecrosis
eng
uncontrolled
early-stage osteonecrosis
eng
uncontrolled
implantation
eng
uncontrolled
bone
eng
uncontrolled
marrow
eng
uncontrolled
follow-up
eng
uncontrolled
intake
eng
uncontrolled
avascular necrosis
eng
uncontrolled
occupational-status
eng
uncontrolled
cigarette smoking
eng
uncontrolled
alcohol
eng
uncontrolled
prevalence
Medizin und Gesundheit
open_access
Medizinische Klinik und Poliklinik I
Universität Würzburg
https://opus.bibliothek.uni-wuerzburg.de/files/13848/ChineseMedJournal.pdf
25673
2021
eng
6274–6282
20
27
article
1
2022-02-14
--
--
Highly Emissive 9-Borafluorene Derivatives: Synthesis, Photophysical Properties and Device Fabrication
A series of 9-borafluorene derivatives, functionalised with electron-donating groups, have been prepared. Some of these 9-borafluorene compounds exhibit strong yellowish emission in solution and in the solid state with relatively high quantum yields (up to 73.6 % for FMesB-Cz as a neat film). The results suggest that the highly twisted donor groups suppress charge transfer, but the intrinsic photophysical properties of the 9-borafluorene systems remain. The new compounds showed enhanced stability towards the atmosphere, and exhibited excellent thermal stability, revealing their potential for application in materials science. Organic light-emitting diode (OLED) devices were fabricated with two of the highly emissive compounds, and they exhibited strong yellow-greenish electroluminescence, with a maximum luminance intensity of >22 000 cd m\(^{-2}\). These are the first two examples of 9-borafluorene derivatives being used as light-emitting materials in OLED devices, and they have enabled us to achieve a balance between maintaining their intrinsic properties while improving their stability.
Chemistry—A European Journal
10.1002/chem.202005185
urn:nbn:de:bvb:20-opus-256738
publish
Chemistry—A European Journal 2021, 27(20):6274–6282. DOI: 10.1002/chem.202005185
false
true
CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International
Xing Chen
Guoyun Meng
Guanming Liao
Florian Rauch
Jiang He
Alexandra Friedrich
Todd B. Marder
Nan Wang
Pangkuan Chen
Suning Wang
Xiaodong Yin
eng
uncontrolled
boron heterocycles
eng
uncontrolled
photophysics
eng
uncontrolled
organic light-emitting diodes
eng
uncontrolled
luminescence
eng
uncontrolled
density functional calculations
Anorganische Chemie
open_access
Institut für Anorganische Chemie
Universität Würzburg
https://opus.bibliothek.uni-wuerzburg.de/files/25673/Chen_Chemistry.pdf
22833
2021
eng
168
190
1
76
article
1
--
--
--
ARIA digital anamorphosis: Digital transformation of health and care in airway diseases from research to practice
Digital anamorphosis is used to define a distorted image of health and care that may be viewed correctly using digital tools and strategies. MASK digital anamorphosis represents the process used by MASK to develop the digital transformation of health and care in rhinitis. It strengthens the ARIA change management strategy in the prevention and management of airway disease. The MASK strategy is based on validated digital tools. Using the MASK digital tool and the CARAT online enhanced clinical framework, solutions for practical steps of digital enhancement of care are proposed.
Allergy
10.1111/all.14422
urn:nbn:de:bvb:20-opus-228339
2021-03-01T13:23:12+00:00
sword
swordwue
attachment; filename=deposit.zip
5942a582cca0a54e1cc390acb4153f99
Allergy 2021, 76(1):168–190. DOI: 10.1111/all.14422
false
true
CC BY-NC-ND: Creative-Commons-Lizenz: Namensnennung, Nicht kommerziell, Keine Bearbeitungen 4.0 International
Jean Bousquet
Josep M. Anto
Claus Bachert
Tari Haahtela
Torsten Zuberbier
Wienczyslawa Czarlewski
Anna Bedbrook
Sinthia Bosnic‐Anticevich
G. Walter Canonica
Victoria Cardona
Elisio Costa
Alvaro A. Cruz
Marina Erhola
Wytske J. Fokkens
Joao A. Fonseca
Maddalena Illario
Juan‐Carlos Ivancevich
Marek Jutel
Ludger Klimek
Piotr Kuna
Violeta Kvedariene
LTT Le
Désirée E. Larenas‐Linnemann
Daniel Laune
Olga M. Lourenço
Erik Melén
Joaquim Mullol
Marek Niedoszytko
Mikaëla Odemyr
Yoshitaka Okamoto
Nikos G. Papadopoulos
Vincenzo Patella
Oliver Pfaar
Nhân Pham‐Thi
Christine Rolland
Boleslaw Samolinski
Aziz Sheikh
Mikhail Sofiev
Charlotte Suppli Ulrik
Ana Todo‐Bom
Peter‐Valentin Tomazic
Sanna Toppila‐Salmi
Ioanna Tsiligianni
Arunas Valiulis
Erkka Valovirta
Maria‐Teresa Ventura
Samantha Walker
Sian Williams
Arzu Yorgancioglu
Ioana Agache
Cezmi A. Akdis
Rute Almeida
Ignacio J. Ansotegui
Isabella Annesi‐Maesano
Sylvie Arnavielhe
Xavier Basagaña
Eric D. Bateman
Annabelle Bédard
Martin Bedolla‐Barajas
Sven Becker
Kazi S. Bennoor
Samuel Benveniste
Karl C. Bergmann
Michael Bewick
Slawomir Bialek
Nils E. Billo
Carsten Bindslev‐Jensen
Leif Bjermer
Hubert Blain
Matteo Bonini
Philippe Bonniaud
Isabelle Bosse
Jacques Bouchard
Louis‐Philippe Boulet
Rodolphe Bourret
Koen Boussery
Fluvio Braido
Vitalis Briedis
Andrew Briggs
Christopher E. Brightling
Jan Brozek
Guy Brusselle
Luisa Brussino
Roland Buhl
Roland Buonaiuto
Moises A. Calderon
Paulo Camargos
Thierry Camuzat
Luis Caraballo
Ana‐Maria Carriazo
Warner Carr
Christine Cartier
Thomas Casale
Lorenzo Cecchi
Alfonso M. Cepeda Sarabia
Niels H. Chavannes
Ekaterine Chkhartishvili
Derek K. Chu
Cemal Cingi
Jaime Correia de Sousa
David J. Costa
Anne‐Lise Courbis
Adnan Custovic
Biljana Cvetkosvki
Gennaro D'Amato
Jane da Silva
Carina Dantas
Dejan Dokic
Yves Dauvilliers
Giulia De Feo
Govert De Vries
Philippe Devillier
Stefania Di Capua
Gerard Dray
Ruta Dubakiene
Stephen R. Durham
Mark Dykewicz
Motohiro Ebisawa
Mina Gaga
Yehia El‐Gamal
Enrico Heffler
Regina Emuzyte
John Farrell
Jean‐Luc Fauquert
Alessandro Fiocchi
Antje Fink‐Wagner
Jean‐François Fontaine
José M. Fuentes Perez
Bilun Gemicioğlu
Amiran Gamkrelidze
Judith Garcia‐Aymerich
Philippe Gevaert
René Maximiliano Gomez
Sandra González Diaz
Maia Gotua
Nick A. Guldemond
Maria‐Antonieta Guzmán
Jawad Hajjam
Yunuen R. Huerta Villalobos
Marc Humbert
Guido Iaccarino
Despo Ierodiakonou
Tomohisa Iinuma
Ewa Jassem
Guy Joos
Ki‐Suck Jung
Igor Kaidashev
Omer Kalayci
Przemyslaw Kardas
Thomas Keil
Musa Khaitov
Nikolai Khaltaev
Jorg Kleine‐Tebbe
Rostislav Kouznetsov
Marek L. Kowalski
Vicky Kritikos
Inger Kull
Stefania La Grutta
Lisa Leonardini
Henrik Ljungberg
Philip Lieberman
Brian Lipworth
Karin C. Lodrup Carlsen
Catarina Lopes‐Pereira
Claudia C. Loureiro
Renaud Louis
Alpana Mair
Bassam Mahboub
Michaël Makris
Joao Malva
Patrick Manning
Gailen D. Marshall
Mohamed R. Masjedi
Jorge F. Maspero
Pedro Carreiro‐Martins
Mika Makela
Eve Mathieu‐Dupas
Marcus Maurer
Esteban De Manuel Keenoy
Elisabete Melo‐Gomes
Eli O. Meltzer
Enrica Menditto
Jacques Mercier
Yann Micheli
Neven Miculinic
Florin Mihaltan
Branislava Milenkovic
Dimitirios I. Mitsias
Giuliana Moda
Maria‐Dolores Mogica‐Martinez
Yousser Mohammad
Steve Montefort
Ricardo Monti
Mario Morais‐Almeida
Ralph Mösges
Lars Münter
Antonella Muraro
Ruth Murray
Robert Naclerio
Luigi Napoli
Leyla Namazova‐Baranova
Hugo Neffen
Kristoff Nekam
Angelo Neou
Björn Nordlund
Ettore Novellino
Dieudonné Nyembue
Robyn O'Hehir
Ken Ohta
Kimi Okubo
Gabrielle L. Onorato
Valentina Orlando
Solange Ouedraogo
Julia Palamarchuk
Isabella Pali‐Schöll
Peter Panzner
Hae‐Sim Park
Gianni Passalacqua
Jean‐Louis Pépin
Ema Paulino
Ruby Pawankar
Jim Phillips
Robert Picard
Hilary Pinnock
Davor Plavec
Todor A. Popov
Fabienne Portejoie
David Price
Emmanuel P. Prokopakis
Fotis Psarros
Benoit Pugin
Francesca Puggioni
Pablo Quinones‐Delgado
Filip Raciborski
Rojin Rajabian‐Söderlund
Frederico S. Regateiro
Sietze Reitsma
Daniela Rivero‐Yeverino
Graham Roberts
Nicolas Roche
Erendira Rodriguez‐Zagal
Christine Rolland
Regina E. Roller‐Wirnsberger
Nelson Rosario
Antonino Romano
Menachem Rottem
Dermot Ryan
Johanna Salimäki
Mario M. Sanchez‐Borges
Joaquin Sastre
Glenis K. Scadding
Sophie Scheire
Peter Schmid‐Grendelmeier
Holger J. Schünemann
Faradiba Sarquis Serpa
Mohamed Shamji
Juan‐Carlos Sisul
Mikhail Sofiev
Dirceu Solé
David Somekh
Talant Sooronbaev
Milan Sova
François Spertini
Otto Spranger
Cristiana Stellato
Rafael Stelmach
Michel Thibaudon
Teresa To
Mondher Toumi
Omar Usmani
Antonio A. Valero
Rudolph Valenta
Marylin Valentin‐Rostan
Marilyn Urrutia Pereira
Rianne van der Kleij
Michiel Van Eerd
Olivier Vandenplas
Tuula Vasankari
Antonio Vaz Carneiro
Giorgio Vezzani
Frédéric Viart
Giovanni Viegi
Dana Wallace
Martin Wagenmann
De Yun Wang
Susan Waserman
Magnus Wickman
Dennis M. Williams
Gary Wong
Piotr Wroczynski
Panayiotis K. Yiallouros
Osman M. Yusuf
Heather J. Zar
Stéphane Zeng
Mario E. Zernotti
Luo Zhang
Nan Shan Zhong
Mihaela Zidarn
eng
uncontrolled
ARIA
eng
uncontrolled
asthma
eng
uncontrolled
CARAT
eng
uncontrolled
digital transformation of health and care
eng
uncontrolled
MASK
eng
uncontrolled
rhinitis
Medizin und Gesundheit
open_access
Institut für Klinische Epidemiologie und Biometrie
Import
Universität Würzburg
https://opus.bibliothek.uni-wuerzburg.de/files/22833/ALL_ALL14422.pdf