bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experimental Study of the Effect of Heave Plate Dimensions on the Flow-Induced Motions (FIM) of a Multi-Column Floating Offshore Wind Turbine (FOWT)
Authors: Gonçalves Rodolfo T. , Malta Edgard B. , Simos Alexandre N. , Hirabayashi Shinichiro , Suzuki Hideyuki 
Published: October 2022

Abstract
Flow-Induced Motions (FIM) is an issue for multi-column platforms, such as Floating Offshore Wind Turbines (FOWT). The phenomenon can increase the fatigue failure of the mooring and/or cable systems and can also stop the turbine operation. One of the solutions to reduce the wave-induced motions (WIM) of FOWT designs is the inclusion of Heave Plates (HP). HP is used for increasing the added mass and viscous damping for the motions in waves; however, the behavior was not deeply investigated in the presence of currents. FIM model tests were performed for the Jappaku FOWT (JPK), a FOWT developed to operate in Brazilian waters. This paper aims to investigate the presence of FIM on the JPK to show the importance of HP design and to show how HP mitigates FIM. Three different HP dimensions were tested and compared with the condition without HP. In addition, two different incidence angles of the current were tested, namely 0 and 180 degrees. The results showed amplitudes in the transverse direction of around 100% of the diameter of the external platform column for the case without HP, which is larger than the ones observed for the deep-draft (DD) semi-submersible (SS). Conversely, FIM amplitudes decreased when increasing HP dimensions. The presence of the central column played an essential role in FIM. Due to the different diameters of the external and central columns, the FIM presented two different branches of response related to the vortex-shedding frequency around the columns. The results showed that significant FIM could occur for this specific JPK investigation even with HP. The HP design has a positive effect for reducing dynamic behaviors due to the wave and current incidences. Therefore, its design must be included in the preliminary stages of FOWT developments.
Wave-by-Wave Prediction in Narrowly Spread Seas Using Fixed- and Drifting-Point Wave Records: Validation Using Physical Measurements
Authors: Hlophe Thobani , Wolgamot Hugh , Taylor Paul H. , Kurniawan Adi , Orszaghova Jana , Draper Scott 
Published: October 2022

Abstract
Accurate and reliable phase-resolved prediction of ocean surface waves is crucial for many offshore operations in ocean engineering and marine science. One important application is in optimal control of a power take-off in a wave energy converter, leading to significantly higher power production. Our interest is the forecasting of wave fields based on measurements obtained from multiple upwave locations in moderate seas with small directional spreading angles, such as is prevalent along the south coast of Australia. The prediction model, based on FFTs and propagation of waves according to the linear dispersion relation, is applied to both wave groups and irregular wave fields generated in a wave basin and, additionally, to ocean waves measured with drifting wave buoys. To account for spreading, the model numerically advances linear, plane (i.e. long-crested) waves in space at an optimum offset angle equal to the underlying sea-state root-mean-square spreading angle. Averaging predictions based on a few slightly separated measurement locations, each weighted according to the estimated variance of the individual prediction, is shown to be more accurate than that from any single location. We also assess in detail the effect of drifting-buoy measurements in both long-crested and short-crested seas using synthetic wave records and show that it is possible to satisfactorily reconstruct the signal at fixed points based on the Doppler shift felt by the drifting buoy. The reconstructed signals give much better predictions compared to those completely neglecting the effect of even rather slow drift.
Experimental Investigation on a Speed Controlled Wells Turbine for Wave Energy Conversion
Authors: Licheri F. , Puddu P. , Cambuli F. , Ghisu T. 
Published: October 2022

Abstract
Ocean wave energy represents one of the most attractive renewable sources due to its high availability and predictability. Solutions based on the Oscillating Water Column (OWC) principle are one of the most promising for sea-wave energy conversion. The system is composed of two main units, an open chamber that converts the sea wave motion into an alternating airflow, and a turbine driven by this flow. The typical alternating airflow inside the OWC chamber requires a turbine with self-rectifying behavior. The Wells turbine is the simplest and most reliable turbine for this purpose in virtue of its rotor with symmetric blades staggered at 90 degrees relative to the axis of rotation.
The non-stationary operating conditions of the Wells turbine strongly affect its performance when working away from its optimal efficiency point. By controlling the turbine rotational speed, the operating conditions can be kept closer to the maximum efficiency point. Recent works, based on dynamic simulations, have proposed control strategies for the turbine rotational speed, to avoid stall occurring under variable wave conditions.
The present work investigates a rotational speed control in order to keep the operating conditions closer to the turbine’s maximum efficiency point. The analyses have been conducted in an experimental facility capable to simulate an OWC system with regular (sinusoidal) wave motion. Wells turbine performance has been evaluated for different control laws and it is compared to not-controlled turbine performance in order to evaluate the effectiveness of the control action.
Model Test and Validation of the Crown Floating Offshore Wind Turbine
Authors: Yu Wei , Lemmer Frank , Lehmann Katja , Cheng Po Wen , de Guzmán Santiago , Moreu Jaime , Battistella Tommaso 
Published: October 2022

Abstract
This work presents the results of a test campaign for a Floating Offshore Wind Turbine (FOWT) at a scale of 1:36. The floater is a Reduced-Draft-Spar platform for the DTU 10 MW reference wind turbine. A multifan system creating the equivalent aerodynamic thrust forces is used to replace the scaled physical turbine model, which is known as hybrid hardware-in-the-loop testing. The tests focus on different motion reduction techniques: an anti-heeling ballast and control system, a real-time observer, and a tuned liquid multi column damper, which are tested in a wave tank for the first time. Various tests are carried out to identify and calibrate the FOWT system. Results for regular waves, irregular waves and turbulent winds are presented in both time and frequency domain. Among the key results are the performance indicators of the motion reduction strategies. Several clear examples are provided along with a detailed analysis of the dynamic response for irregular wave conditions. The comparison of the numerically reproduced dynamic responses to the tests are presented as well, where a good agreement is found.
Mental Health Literacy Workshop for Youth Sport Coaches: A Mixed-Methods Pilot Study
Authors: Drew Breanna J. , Sutcliffe Jordan T. , Liddle Sarah K. , Bruner Mark W. , McLaren Colin D. , Swann Christian , Schweickle Matthew J. , Vella Stewart A. 
Published: October 2022

Among other responsibilities, youth sport coaches are positioned to monitor and address the mental health needs of their athletes. Despite this, there are limited interventions aimed at improving coaches’ mental health literacy. Using a mixed-methods design, the aim of this pilot study was to evaluate the feasibility, acceptability, and mental health literacy outcomes associated with a brief (75 min) workshop for youth sport coaches. Fourteen coaches (13 males, one female) completed pre- and postworkshop surveys measuring indices of mental health literacy, and 10 of these same participants engaged in a semistructured interview 1-month later. Overall, coaches who participated in the pilot workshop reported significant improvements in depression literacy, intentions to seek self-help for oneself and their athletes, and knowledge and confidence to provide help. In addition, coaches reported positive impressions of the workshop during the follow-up interviews and provided concrete examples of program content application. An important suggestion made by coaches was the need to align the workshop content to governing policy. Taken together, this pilot mental health literacy workshop for youth sport coaches shows strong promise and is ready for large-scale dissemination.
The Role of Daily Step Count in Determining Risk Factors for Falls
Authors: Jayakody Oshadi , Kirubasankar Aishwarya , Collyer Taya , Srikanth Velandai K. , Callisaya Michele L. 
Published: October 2022

Falls risk is often assessed without considering exposure to risk. We examined the risk factors associated with falls in those with greater and lower levels of daily step count. Falls were recorded over 12 months using bimonthly calendars in community-dwelling older people (mean age 72.0, SD 6.9). Daily step count was measured using a pedometer worn consecutively for 7 days. A cut score of <5,575.5 steps/day was used to identify people with lower step count. Negative binominal models were used to identify cognitive, medical, and sensorimotor factors associated with falls in those with higher versus lower levels of daily step count. In those with lower daily step count, poorer executive function, slower gait speed, and lower steps per day were associated with increased falls risk. In those with higher step count, only mood was associated with increased falls risk. Considering daily step count is important when assessing falls risk in older people.
Pupillotonia after endolaser retinopexy during vitrectomy for retinal detachment: a prospective cohort study comparing circumferential and focal retinopexy
Authors: Skevas Christos , Thiwa David , Bartz-Schmidt Karl-Ulrich , Katz Toam , Spitzer Martin , Dimopoulos Spyridon 
Published: October 2022

Purpose
To determine differences in postoperative pupil diameter in eyes that undergo pars plana vitrectomy (PPV) for rhegmatogenous retinal detachment (RRD) with endolaser retinopexy (ELR), comparing 360° vs focal ELR.

Methods
Patients with uncomplicated RRD who underwent PPV were prospectively analysed regarding the postoperative pupil diameter difference (PDD) between the affected eye and the partner eye. Group 1 underwent 360° ELR and group 2 received focal ELR. Postoperative vision and complications, including redetachment rate, macular oedema and epiretinal membrane formation, were also compared.

Results
A total of 72 patients, 42 in group 1 and 30 in group 2, were analysed. PDD, as observed at 6 weeks, was significantly greater than the preoperative values in both groups 1 and 2. It increased by a mean of 1±1.11 mm in group 1 and by 0.5±0.78 in group 2. This initial increase in PDD receded over time, but remained statistically significant in both groups, even at 6 months. The top 20% of patients with the largest PDD change comprised 13 out of 15 eyes from group 1, which was a statistically significant overrepresentation (p=0.0435).

Conclusions
Moderate pupillotonia was induced post-ELR in vitrectomy and correlated to the extent of ELR. The pupillotonia effect of ELR was significantly less marked in pseudophakic eyes.
Food insecurity, diet quality, and suboptimal diabetes management among US adults with diabetes
Authors: Casagrande Sarah S , Bullard Kai McKeever , Siegel Karen R , Lawrence Jean M 
Published: October 2022

IntroductionA healthy diet is recommended to support diabetes management, including HbA1c, blood pressure, and cholesterol (ABC) control, but food insecurity is a barrier to consuming a healthy diet. We determined the prevalence of food insecurity and diet quality among US adults with diabetes and the associations with ABC management.Research design and methodsCross-sectional analyses were conducted among 2075 adults ≥20 years with diagnosed diabetes who participated in the 2013–2018 National Health and Nutrition Examination Surveys. Food insecurity was assessed using a standard questionnaire and diet quality was assessed using quartiles of the 2015 Healthy Eating Index. Adjusted ORs (aOR, 95% CI) were calculated from logistic regression models to determine the association between household food insecurity/diet quality and the ABCs while controlling for sociodemographic characteristics, healthcare utilization, smoking, medication for diabetes, blood pressure, or cholesterol, and body mass index.ResultsOverall, 17.6% of adults had food insecurity/low diet quality; 14.2% had food insecurity/high diet quality; 33.1% had food security/low diet quality; and 35.2% had food security/high diet quality. Compared with adults with food security/high diet quality, those with food insecurity/low diet quality were significantly more likely to have HbA1c ≥7.0% (aOR=1.85, 95% CI 1.23 to 2.80) and HbA1c ≥8.0% (aOR=1.79, 95% CI 1.04 to 3.08); food insecurity/high diet quality was significantly associated with elevated HbA1c; and food security/low diet quality with elevated A1c.ConclusionsFood insecurity, regardless of diet quality, was significantly associated with elevated A1c. For people with food insecurity, providing resources to reduce food insecurity could strengthen the overall approach to optimal diabetes management.
Prognostic risk factor analysis and nomogram construction for primary liver cancer in elderly patients based on SEER database
Authors: Li Fangyuan , Zheng Ting , Gu Xuewei 
Published: October 2022

ObjectiveTo evaluate the risk factors and construct a nomogram model for the prognosis of primary liver cancer in the elderly based on the data from the US SEER database.MethodsThe latest data of patients with primary liver cancer were extracted from the SEER database using SEER*STAT software, and the required variables were included. The data were screened and then divided into a training cohort and a validation cohort. A nomogram model was constructed by screening the variables through univariate and multivariate Cox analysis. The C-Index, ROC and calibration curves were used for model evaluation.ResultsA total of 10 824 eligible cases from 2004 to 2017 were extracted, among which, 7757 cases were included in the training cohort and 3247 in the validation cohort. The C-Index of the model was 0.747 (in the training cohort) and 0.773 (in the validation cohort). The 3-year area under the curve (AUCs) of the training and the validation cohorts were 0.760 and 0.750, and the 5-year AUCs of the two cohorts were 0.761 and 0.748. The calibration curves showed an ideal calibration of the constructed model.ConclusionsThe nomogram model constructed followed by Cox regression analysis showed moderate calibration and discrimination property, and can provide reference to a certain extent for furture clinical application of primary liver cancer in the elderly.
Fetal–neonatal and maternal pregnancy outcomes in women with rheumatoid arthritis: a population-based cohort study
Authors: Tsai Yun-Chen , Chang Hsiao-Chun , Chiou Meng-Jiun , Luo Shue-Fen , Kuo Chang-Fu 
Published: October 2022

ObjectivesRheumatoid arthritis (RA) may adversely influence pregnancy and lead to adverse birth outcomes. This study estimated the risk of adverse fetal–neonatal and maternal pregnancy outcomes in women with RA.DesignThis was a retrospective cohort study.SettingWe used both the National Health Insurance database and the Taiwan Birth Reporting System, between 2004 and 2014.ParticipantsWe identified 2 100 143 singleton pregnancies with 922 RA pregnancies, either live births or stillbirths, delivered by 1 468 318 women.Outcome measuresORs with 95% CIs for fetal–neonatal and maternal outcomes were compared between pregnancies involving mothers with and without RA using an adjusted generalised estimating equation model.ResultsCovariates including age, infant sex, Charlson Comorbidity Index, urbanisation, income, occupation, birth year and maternal nationality were adjusted. Compared with pregnancies in women without RA, pregnancies in women with RA showed that the fetuses/neonates had adjusted ORs (95% CI) of 2.03 (1.66 to 2.50) for low birth weight (n=123), 1.99 (1.64 to 2.40) for prematurity (n=141), 1.77 (1.46 to 2.15) for small for gestational age (n=144) and 1.35 (1.03 to 1.78) for fetal distress (n=60). Pregnancies in women with RA had adjusted ORs (95% CI) of 1.24 (1.00 to 1.52) for antepartum haemorrhage (n=106), 1.32 (1.15 to 1.51) for caesarean delivery (n=398), and 3.33 (1.07 to 10.34) for disseminated intravascular coagulation (n=3), compared with women without RA. Fetuses/neonates born to mothers with RA did not have a higher risk of being stillborn or having fetal abnormalities. Pregnant women with RA did not have increased risks of postpartum death, cardiovascular complications, surgical complications or systemic organ dysfunction.ConclusionsPregnancies in women with RA were associated with higher risks of multiple adverse fetal–neonatal and maternal outcomes; however, most pregnancies in these women were successful.
Comparison between collateral status and DEFUSE 3 or DAWN criteria in patient selection for endovascular thrombectomy within 6−24 hours after stroke: a protocol for meta-analysis
Authors: Shen Yuling , Li Mao , Chen Yun , Liu Shanyu , Liu Junyan , Yang Dongdong 
Published: October 2022

IntroductionPerfusion imaging according to the DEFUSE 3 or DAWN criteria has been applied to select patients with large vascular occlusive stroke undergo endovascular therapy (EVT) in the extended time window. Emerging studies have shown that collateral blood flow-based criteria may be as effective as DEFUSE 3 and DAWN criteria for the evaluation of EVT eligibility beyond 6 hours. We will conduct a meta-analysis to compare collateral status-based criteria with DEFUSE 3 or DAWN criteria.Methods and analysisWe will conduct a search for the studies comparing collateral blood flow-based imaging with CT perfusion using the DEFUSE 3 or DAWN criteria in selecting patients with acute ischaemic stroke undergo EVT in the Web of Science, PubMed, EMBASE and the Cochrane Library databases between November 2017 and November 2021. We will also search the sources of grey literature, the reference lists of included studies and the newly published studies during the review period. Two investigators will independently screen the eligible studies and extract data. The study quality will be assessed by using the Newcastle-Ottawa Scale or the Cochrane risk bias tool. Stata V.17 will be used to conduct data analysis.Ethics and disseminationPatient informed consent and ethics approval are not necessary as this study uses only published studies. The finding of this meta-analysis will be propagated through committee conferences or peer-reviewed journals.PROSPERO registration numberCRD42021281928.
What is the gender representation in authorship in later phase systemic clinical trials in biliary tract cancer (BTC)? - a retrospective review of the published literature
Authors: McNamara Mairéad G , Bridgewater John , Goyal Lipika , Jacobs Timothy , Wagner Anna D , Goldstein David , Shroff Rachna , Moehler Markus , Lowery Maeve , Bekaii-Saab Tanios , Kelley Robin K , Furuse Junji , Rimassa Lorenza , Morizane Chigusa , Lamarca Angela , Hubner Richard , Knox Jennifer , Valle Juan 
Published: October 2022

ObjectivesFemale physicians in medicine are increasing, but disparities in female authorship exist. The aim of this study was to characterise factors associated with female first (FF) and female senior (SF) authorship in later phase systemic oncological clinical trials in biliary tract cancer (BTC) and identify any changes over time.SettingEmbase/Medline identified trial publications in BTC (2000–2020) were included. χ2tests and log regression were used (assessed factors associated with FF and SF authorship, including changes over time (STATA V.16)).Primary outcome measureFF and SF authorship in later phase systemic oncological clinical trials in BTC.Secondary outcome measureAny changes over time?ResultsOf 501 publications, 163 met inclusion criteria. The median percentage of female author representation in publications was 25%; there were no female authors in 13% of publications. Geographic location of the home institution of the first and senior authors was Asia (42%/42%), Europe (29%/29%), USA (24%/22%) and other (4%/6%), respectively. Overall, FF and SF author representation was 20% and 10%, respectively. The median position of the first female author was second in all the publication author lists. The phase of trial, journal-impact factor, industry funding or whether the study met its primary endpoint did not impact FF/SF author representation. More SF authors had home institutions in ‘other’ geographic locations (40% in 10 trials) (p=0.02) versus Asia (6%), Europe (8%) and USA (14%). There were no significant changes in FF/SF representation over time (p=0.61 and p=0.33 respectively).ConclusionsFF and SF author representation in later phase systemic clinical trial publications in BTC is low and has not changed significantly over time. The underlying reasons for this imbalance need to be better understood and addressed.
Patient safety culture and associated factors in secondary health care of the Capital Region of Denmark: influence of specialty, healthcare profession and gender
Authors: Østergaard Doris , Madsen Marlene Dyrløv , Ersbøll Annette Kjær , Frappart Helle Søgaard , Kure Josefine Haahr , Kristensen Solvejg 
Published: October 2022

BackgroundWe aimed to explore (1) the influence of healthcare professionals' (HCPs’) specialty, profession, gender and length of employment on their perception of six dimensions of patient safety culture (PSC) and (2) the relation between these characteristics and the two dimensions of safety climate and perception of management.MethodsIn a cross-sectional study, a Danish version of the Safety Attitudes Questionnaire was sent to all HCPs at a large regional hospital organisation. This included hospitals, the Emergency Services, the Regional Pharmacy and the Centre for Diabetes corporations. A total of 30 230 HCPs received the survey. Differences between specialties, professions, gender and years of employment were tested for each dimension of PSC. Differences in mean attitude scores were tested using analysis of variance and differences in having a positive attitude were tested using logistic regression.ResultsIn total, 15 119 (50%) HCPs returned the survey. Significant differences are seen across hospitals and corporations for all dimensions of PSC. The proportion of HCPs with a positive attitude was largest regarding job satisfaction (74.8%) and lowest regarding perception of management (43.9%). Significant differences are seen in physicians' and nurses' perception of PSC in the different specialties within all dimensions of PSC except for the dimension of recognition of stress. Significant differences in positive perception of teamwork climate are seen between anaesthesiologists' (69.4%) and surgeons' (41.7%). No significant gender differences were found between physicians' and nurses' perception of safety climate and of management. In addition, we found an influence of years of employment on PSC.DiscussionSignificant differences were found in HCPs' perception of PSC between corporations, specialties and professions. The lowest proportion of HCPs with a positive perception of PSC was found within the dimensions of safety climate and perception of management. These differences may have implications for teamwork and patient safety.