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See detailLa qualité de la publicité relative aux fonds d'investissement
Riassetto, Isabelle UL

in Droit du financement de l’économie, Revue européenne (2019), (3), 3-16

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See detailQuality assessment of GPS reprocessed terrestrial reference frame
Collilieux, Xavier; Métivier, Laurent; Altamimi, Zuheir et al

in GPS Solutions (2011), 15(3), 219--231

The International GNSS Service (IGS) contributes to the construction of the International Terrestrial Reference Frame (ITRF) by submitting time series of station positions and Earth Rotation Parameters ... [more ▼]

The International GNSS Service (IGS) contributes to the construction of the International Terrestrial Reference Frame (ITRF) by submitting time series of station positions and Earth Rotation Parameters (ERP). For the first time, its submission to the ITRF2008 construction is based on a combination of entirely reprocessed GPS solutions delivered by 11 Analysis Centers (ACs). We analyze the IGS submission and four of the individual AC contributions in terms of the GNSS frame origin and scale, station position repeatability and time series seasonal variations. We show here that the GPS Terrestrial Reference Frame (TRF) origin is consistent with Satellite laser Ranging (SLR) at the centimeter level with a drift lower than 1 mm/year. Although the scale drift compared to Very Long baseline Interferometry (VLBI) and SLR mean scale is smaller than 0.4 mm/year, we think that it would be premature to use that information in the ITRF scale definition due to its strong dependence on the GPS satellite and ground antenna phase center variations. The new position time series also show a better repeatability compared to past IGS combined products and their annual variations are shown to be more consistent with loading models. The comparison of GPS station positions and velocities to those of VLBI via local ties in co-located sites demonstrates that the IGS reprocessed solution submitted to the ITRF2008 is more reliable and precise than any of the past submissions. However, we show that some of the remaining inconsistencies between GPS and VLBI positioning may be caused by uncalibrated GNSS radomes. [less ▲]

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See detailQuality assessment of Mulit-Year BLT Tide Gauge Benchmark Monitoring (TIGA) repro2 Solution
Hunegnaw, Addisu UL; Teferle, Felix Norman UL

Poster (2016, February)

Recently the International GNSS Service (IGS) Tide Gauge Benchmark Monitoring (TIGA) Working Group (WG) has completed their repro2 solutions by re-analyzeing the full history of all relevant Global ... [more ▼]

Recently the International GNSS Service (IGS) Tide Gauge Benchmark Monitoring (TIGA) Working Group (WG) has completed their repro2 solutions by re-analyzeing the full history of all relevant Global Positioning System (GPS) observations from 1995 to 2015. This re-processed data set will provide high-quality estimates of vertical land movements for more than 500 stations, enabling regional and global high-precision geophysical/geodetic studies. All the TIGA Analysis Centres (TACs) have mainly processed the GPS observations recorded by GPS stations at or close to tide gauges, which are available from the TIGA data centre at the University of La Rochelle (www.sonel.org). Following the recent improvements in processing models, strategies (http://acc.igs.org/reprocess2.html), this is the first complete re-processing attempt by the TIGA WG to provide homogeneous position time series relevant to sea level changes. In this study we report on a first multi-year daily combined solution from the TIGA Combination Centre (TCC) at the University of Luxembourg (UL) with respect to the latest International Terrestrial Reference Frame (ITRF2014). Using two independent combination software packages, CATREF and GLOBK, we have computed a first daily combined solution from TAC solutions already available for TIGA WG. These combinations allow an evaluation of any effects from the combination software and of the individual TAC parameters and their influences on the combined solution with respect to the latest ITRF2014. Some results of the UL TIGA multi-year combinations in terms of geocentric sea level changes will be presented and discussed. [less ▲]

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See detailQuality Evaluation of the Weekly Vertical Loading Effects Induced from Continental Water Storage Models
Li, Zhao UL; van Dam, Tonie UL; Collilieux, Xavier et al

in Willis, Pascal (Ed.) Proceedings of the 2013 IAG Scientific Assembly, Potsdam, Germany, 1-6 September, 2013 (2015)

To remove continental water storage (CWS) signals from the GPS data, CWS mass models are needed to obtain predicted surface displacements. We compared weekly GPS height time series with five CWS models ... [more ▼]

To remove continental water storage (CWS) signals from the GPS data, CWS mass models are needed to obtain predicted surface displacements. We compared weekly GPS height time series with five CWS models: (1) the monthly and (2) three-hourly Global Land Data Assimilation System (GLDAS); (3) the monthly and (4) one-hourly Modern- Era Retrospective Analysis for Research and Applications (MERRA); (5) the six-hourly National Centers for Environmental Prediction-Department of Energy (NCEP-DOE) global reanalysis products (NCEP-R-2). We find that of the 344 selected global IGS stations, more than 77% of stations have their weighted root mean square (WRMS) reduced in the weekly GPS height by using both the GLDAS and MERRA CWS products to model the surface displacement, and the best improvement concentrate mainly in North America and Eurasia.We find that the one-hourly MERRA-Land dataset is the most appropriate product for modeling weekly vertical surface displacement caused by CWS variations. The threehourly GLDAS data ranks the second, while the GLDAS and MERRA monthly products rank the third. The higher spatial resolution MERRA product improves the performance of the CWS model in reducing the scatter of the GPS height by about 2–6% compared with the GLDAS. Under the same spatial resolution, the higher temporal resolution could also improve the performance by almost the same magnitude. We also confirm that removing the ATML and NTOL effects from the weekly GPS height would remarkably improve the performance of CWS model in correcting the GPS height by at least 10%, especially for coastal and island stations. Since the GLDAS product has a much greater latency than the MERRA product, MERRA would be a better choice to model surface displacements from CWS. Finally, we find that the NCEP-R-2 data is not sufficiently precise to be used for this application. Further work is still required to determine the reason. [less ▲]

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See detailQuality in physical education: an overview from the perspective of physical education teacher associations
Scheuer, Claude UL; Holzweg, Martin

in Scheuer, Claude; Antala, Branislav; Holzweg, Martin (Eds.) Physical Education: Quality in Management and Teaching (2014)

In the frame of the general discussion about quality in physical education, it is a first step to determine the factors or criteria that are subject to have an influence on the quality of physical ... [more ▼]

In the frame of the general discussion about quality in physical education, it is a first step to determine the factors or criteria that are subject to have an influence on the quality of physical education. Several authors give various structures for equivalent factors, as e. g. Altrichter and Buhren (1997), Egger (2002) or Serwe (2008). Generally, a similar structure can be identified by differentiating between structure, process and product factors having an impact on quality physical education. Besides this, these factors can work on different levels of the school system, namely the system level, the school level and the classroom level, whilst specific factors can impact on more than one level at a time. The view on these determining factors then can come from different perspectives: a practical perspective, a political perspective and a scientific perspective. In this article, the focus lies on the perspective of several physical education teacher associations in – mainly – Europe on quality physical education. Several guidelines, positions statements and recommendations of these associations have been examined in order to identify their position in relation with different factors impacting quality physical education. This was done simultaneously by differentiating between structural, process and product factors on one side and between factors on the system level, school level and classroom level on the other side. [less ▲]

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See detailQuality of doctor-patient communication in cardiovascular diseases and secondary preventive adherence. The role of gender
Bucki, Barbara UL; Le Bihan, Etienne UL; Baumann, Michèle UL

in Innovative ideas in Health Psychology (2017)

The doctor-patient communication intervenes on the preventive behaviours of chronic patients by reducing their risk factors – in cardiovascular diseases: hypertension, overweight, obesity ... [more ▼]

The doctor-patient communication intervenes on the preventive behaviours of chronic patients by reducing their risk factors – in cardiovascular diseases: hypertension, overweight, obesity, hypercholesterolemia, diabetes. What are the associations between the quality of communication and the improvement of secondary preventive behaviours? How does gender influence these relationships? Methods: 1,289 patients who underwent a coronary angiography in 2008/09 in Luxembourg completed a self-administered questionnaire at the time of the visit, and at a five-year follow-up. The probability of improving each preventive eating behaviour (decrease of salt, sugar, fat consumption and increase of fruits/vegetables), and the quality of doctor-patient communication (5-item scale) were evaluated using logistic regression models. Sex was introduced in interaction with the communication score. Findings: Among hypertensive respondents, a higher quality of communication was associated with a higher probability of decreasing the salt intake in women (OR [95% CI]: 1.139 [1.060; 1.223]) whereas in men, the OR was only 1.086 [1.017; 1.159]. ORs were also higher in women among patients with hypertension, overweight and hypercholesterolemia regarding the increase of fruits/vegetables consumption; among patients with diabetes and hypercholesterolemia regarding sugar decrease or cessation; and among patients with overweight and hypercholesterolemia regarding fat reduction or stop. ORs were slightly higher among men only among diabetic and obese patients, regarding the increase of fruits/vegetables consumption. Discussion: The quality of the communication showed an effect on the adoption of secondary preventive eating behaviours, especially in women patients. Motivational interviews could encourage, especially men patients, to adhere to the recommendations about lifestyle change. [less ▲]

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See detailThe quality of experience of students with and without special educational needs in everyday life and when relating to peers (Reprint)
Zurbriggen, Carmen UL; Venetz, Martin; Hinni, Chantal

in Schwab, Susanne; Nel, Mirna; Hellmich, Frank (Eds.) Social participation of students with special educational needs in mainstream education (2019)

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See detailThe quality of experience of students with and without special educational needs in everyday life and when relating to peers
Zurbriggen, Carmen UL; Venetz, Martin; Hinni, Chantal

in European Journal of Special Needs Education (2018)

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See detailQuality of life and attitudes towards psychotropics and dependency: consumers versus non-consumers aged 50 and over
Baumann, Michèle UL; Bonnetain, F.

in Journal of Clinical Pharmacy & Therapeutics (2004), 29

Aim: To assess the relationships between sociodemographic factors, quality of life and attitudes towards psychotropic drugs and dependency and to compare those relationships in continuous consumers (CC ... [more ▼]

Aim: To assess the relationships between sociodemographic factors, quality of life and attitudes towards psychotropic drugs and dependency and to compare those relationships in continuous consumers (CC), occasional consumers (OC) and non-consumers (NC) of those drugs. Methods: Quality of life (SF36) and attitudes (14 statements) were measured in 601 subjects (45–60 years old) from the SUVIMAX cohort (SUpple´mentation en VItamines et en sels Mine ´raux AntioXydants). Data were obtained on 334 NC, 142 CC, 125 OC from the inclusion questionnaire and the monthly consumption report notebooks kept by subjects between 1994 and 1998. Dichotomous and polychotomous logistic regressions were used for the analysis. Results: The lower the quality of life score the more frequent was consumption. NC tended to be men, with high quality of life scores. They entertained negative attitudes towards psychotropics and dependency. OC tended to be women reporting a chronic pathology, with fairly high social status. They had intermediate quality of life and denied dependency. CC tended to be men with no professional activity and low quality of life scores in particular for mental health and perceived health. They had positive attitudes towards psychotropics and accept dependency. Discussion: Assessment of patients’ quality of life and understanding of their attitudes towards psychotropics can provide essential information for those in charge of health promotionprogrammes and may help in identifying new intervention strategies. Preventive education and follow-up of therapy may be better suited to the needs of patients [less ▲]

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See detailQuality of life and positive person-centred rehabilitation.
Baumann, Michèle UL

in Positive Psychology and Well-being (2014)

Quality of life (QoL) assessment is important when monitoring over time the recovery of survivors living at home, two years after stroke onset. The associations between Newcastle Stroke-Specific Quality ... [more ▼]

Quality of life (QoL) assessment is important when monitoring over time the recovery of survivors living at home, two years after stroke onset. The associations between Newcastle Stroke-Specific Quality of life (newsqol) domains, socioeconomic factors and satisfaction with information and home-care services were analysed. This problem remains partially addressed though positive and optimal supports may improve post-stroke’ quality of life. Methods. Stroke-survivors admitted to all hospitals in Luxembourg 18 months or more previously were identified using the only care-expenditure-reimbursement national system database. The clinical diagnosis was confirmed. Ninety four patients aged 65 years and living at home were interviewed to gather socioeconomic characteristics and satisfaction with information and home-care services, and newsqol assessing 11 scores. Data were analyzed using multiple linear sex-age-adjusted regression models. Results. About 50% of patients had low education and lower income. Functional impairments were common: sensory (45%), motor (35%), memory (32%), language (31%), and vision (20%). Patients with education (<12th grade) or lower income had low values for most newsqol domains. In opposite, patients who were working had better values for pain, mental feelings and sleep domains than did retired people. The self-rate quality of life was markedly low, especially for the domains of interpersonal relationship, sleep, cognition, mental feelings, and pain. Patients who were dissatisfied with information and home-care received had rather low values for several newsqol domains. Dissatisfaction with accuracy of information received, information about stroke and its consequences/change over time; help received, lack of coordination between services, and possibility of receiving help when necessary were related with low values for most domains. Dissatisfaction with the possibility of receiving help was also associated with mobility and self-care. Dissatisfaction with information about consequences/change over time of stroke linked with the vision domain. Dissatisfaction with information received about help correlated with mental feelings, interpersonal relationships, emotion, and fatigue. Being confident about where to get information about stroke, looking after someone who has had a stroke if needed, or about financial help, and being confident about who to contact from community services if needed were slightly associated with communication, mental feelings and interpersonal relationships only. Conclusions. Post-stroke patients had major alterations in quality of life that reflected depressive symptoms, which should be appropriately treated. Our results further raise the question concerning the needs and satisfaction of stroke-survivors living at home in terms of information and care services as well as interactions with social and medical carers according to recovery stage and possible relapse over time. The changing nature of needs at different stages of recovery may not be paid sufficient attention. A telephone service could help. Use of IT technology has been proposed to promote positive person-centred rehabilitation. It has been shown, with Telestroke, that videoconference calls can help to reduce stress, provide reassurance about the secondary effects of treatment, improve compliance with prescriptions, and yield valuable information about services. [less ▲]

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See detailQuality of life predicts outcome of deep brain stimulation in early Parkinson disease
Krüger, Rejko UL; EARLYSTIM study group; Schuepbach, Michael et al

in Neurology (2019)

Objective Toinvestigatepredictorsforimprovementofdisease-specificqualityoflife(QOL)afterdeepbrainstimulation (DBS) of the subthalamic nucleus (STN) for Parkinson disease (PD) with early motor complications ... [more ▼]

Objective Toinvestigatepredictorsforimprovementofdisease-specificqualityoflife(QOL)afterdeepbrainstimulation (DBS) of the subthalamic nucleus (STN) for Parkinson disease (PD) with early motor complications. Methods We performed a secondary analysis of data from the previously published EARLYSTIM study, a prospective randomizedtrialcomparingSTN-DBS(n= 124)tobestmedicaltreatment(n= 127)after2yearsfollow-up with disease-specific QOL (39-item Parkinson ’s Disease Questionnaire summary index [PDQ-39-SI]) as the primary endpoint. Linear regression analyses of the baseline characteristics age, disease duration, duration of motor complications, and disease severity measured at baseline with the Unified Parkinson’s Disease Rating Scale(UPDRS)(UPDRS-III“off”and“on”medications,UPDRS-IV)wereconductedtodeterminepredictors of change in PDQ-39-SI. Results PDQ-39-SIatbaselinewascorrelatedtothechangeinPDQ-39-SIafter24monthsinbothtreatmentgroups (p<0.05).Thehigherthebaselinescore(worseQOL)thelargertheimprovementinQOLafter24months. No correlation was found for any of the other baseline characteristics analyzed in either treatment group. Conclusion Impaired QOL as subjectively evaluated by the patient is the most important predictor of benefit in patients with PD and early motor complications, fulfilling objective gold standard inclusion criteria for STN-DBS. Our results prompt systematically including evaluation of disease-specific QOL when selecting patients with PD for STN-DBS. [less ▲]

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See detailQuality of life social disparities and roles of family and unhealthy behaviours among adolescents.
Chau, Kénora; Kabuth, Bernard; Baumann, Michèle UL

in Psychology & Health (2011), 26(suppl 2), 147

Adolescents’ quality of life determinants include socioeconomic characteristics and unhealthy behaviours. This study explored WHOQOL social disparities and the roles of family structure, income and ... [more ▼]

Adolescents’ quality of life determinants include socioeconomic characteristics and unhealthy behaviours. This study explored WHOQOL social disparities and the roles of family structure, income and unhealthy behaviours. Methods: 1556 middle-school adolescents from north-eastern France completed a self-administered questionnaire measuring WHOQOL domains and other factors. Data were analysed using multiple regression models. Findings: Significantly lower WHOQOL was found for clerk (gender-age-adjusted regression coefficient r 5.8 (SE 1.1)), manual-worker ( 5.7 (1.5)), unemployed/inactive ( 10.3 (1.5)) and other categories ( 1.3 to 3.2), compared with manager families. Controlling for family structure and income highly reduced the r to 2.45 (1.1), 2.3 (1.5), 5.3 (1.6) and 1.5 to 0.89 (NS), respectively. The disparities remained after further controlling for last-month tobacco/alcohol/cannabis uses and lack of sports-physical activity. Similar findings were found for all physical, psychological, social relationships and environment WHOQOL domains. Discussion: WHOQOL disparities are highly explained by family structure, income and unhealthy behaviours that may be prevention targets. [less ▲]

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See detailQuality of life, emotion regulation, and heart rate variability in individuals with intellectual disabilities and concomitant impaired vision
Meule, Adrian; Fath, Katharina; Real, Ruben et al

in Psychology of Well-Being: Theory, Research and Practice (2013), 3

Background: Positive associations have been found between quality of life, emotion regulation strategies, and heart rate variability (HRV) in people without intellectual disabilities. However, emotion ... [more ▼]

Background: Positive associations have been found between quality of life, emotion regulation strategies, and heart rate variability (HRV) in people without intellectual disabilities. However, emotion regulation and HRV have rarely been investigated in people with intellectual disabilities. Assessment of subjectively reported quality of life and emotion regulation strategies in this population is even more difficult when participants are also visually impaired. Methods: Subjective and objective quality of life, emotion regulation strategies, and HRV at rest were measured in a sample of people with intellectual disabilities and concomitant impaired vision (N = 35). Heart rate was recorded during a 10 min resting period. For the assessment of quality of life and emotion regulation, custom made tactile versions of questionnaire-based instruments were used that enabled participants to grasp response categories. Results: The combined use of reappraisal and suppression as emotion regulation strategies was associated with higher HRV and quality of life. HRV was associated with objective quality of life only. Emotion regulation strategies partially mediated the relationship between HRV and quality of life. Conclusions: Results replicate findings about associations between quality of life, emotion regulation, and HRV and extend them to individuals with intellectual disabilities. Furthermore, this study demonstrated that quality of life and emotion regulation could be assessed in such populations even with concomitant impaired vision with modified tactile versions of established questionnaires. HRV may be used as a physiological index to evaluate physical and affective conditions in this population. [less ▲]

Detailed reference viewed: 172 (9 UL)