bluuebunny/crossref_metadata_2025_split huggingface dataset:
The effect of uncemented acetabular liner geometry and lip size on the risk of revision for instability or loosening
Authors: Divecha Hiren M. , O'Neill Terence W. , Lunt Mark , Board Tim N. 
Published: December 2021

Aims The aim of this study was to determine if uncemented acetabular polyethylene (PE) liner geometry, and lip size, influenced the risk of revision for instability or loosening. Methods A total of 202,511 primary total hip arthroplasties (THAs) with uncemented acetabular components were identified from the National Joint Registry (NJR) dataset between 2003 and 2017. The effect of liner geometry on the risk of revision for instability or loosening was investigated using competing risk regression analyses adjusting for age, sex, American Society of Anesthesiologists grade, indication, side, institution type, surgeon grade, surgical approach, head size, and polyethylene crosslinking. Stratified analyses by surgical approach were performed, including pairwise comparisons of liner geometries. Results The distribution of liner geometries were neutral (39.4%; 79,822), 10° (34.5%; 69,894), 15° (21.6%; 43,722), offset reorientating (2.8%; 5705), offset neutral (0.9%; 1,767), and 20° (0.8%; 1,601). There were 690 (0.34%) revisions for instability. Compared to neutral liners, the adjusted subhazard ratios of revision for instability were: 10°, 0.64 (p < 0.001); 15°, 0.48 (p < 0.001); and offset reorientating, 1.6 (p = 0.010). No association was found with other geometries. 10° and 15° liners had a time-dependent lower risk of revision for instability within the first 1.2 years. In posterior approaches, 10° and 15° liners had a lower risk of revision for instability, with no significant difference between them. The protective effect of lipped over neutral liners was not observed in laterally approached THAs. There were 604 (0.3%) revisions for loosening, but no association between liner geometry and revision for loosening was found. Conclusion This registry-based study confirms a lower risk of revision for instability in posterior approach THAs with 10° or 15° lipped liners compared to neutral liners, but no significant difference between these lip sizes. A higher revision risk is seen with offset reorientating liners. The benefit of lipped geometries against revision for instability was not seen in laterally approached THAs. Liner geometry does not seem to influence the risk of revision for loosening. Cite this article: Bone Joint J 2021;103-B(12):1774–1782.
Interpretation and reporting of predictive or diagnostic machine-learning research in Trauma & Orthopaedics
Authors: Farrow Luke , Zhong Mingjun , Ashcroft George Patrick , Anderson Lesley , Meek R. M. Dominic 
Published: December 2021

There is increasing popularity in the use of artificial intelligence and machine-learning techniques to provide diagnostic and prognostic models for various aspects of Trauma & Orthopaedic surgery. However, correct interpretation of these models is difficult for those without specific knowledge of computing or health data science methodology. Lack of current reporting standards leads to the potential for significant heterogeneity in the design and quality of published studies. We provide an overview of machine-learning techniques for the lay individual, including key terminology and best practice reporting guidelines. Cite this article: Bone Joint J 2021;103-B(12):1754–1758.
Clinical long-term nocturnal sleeping disturbances and excessive daytime sleepiness in Parkinson’s disease
Authors: Del Pino Rocio , Murueta-Goyena Ane , Ayala Unai , Acera Marian , Fernández Mónica , Tijero Beatriz , Carmona Mar , Fernández Tamara , Gabilondo Iñigo , Gómez-Esteban Juan Carlos 
Published: December 2021

Objective
To prospectively evaluate nocturnal sleep problems and excessive daytime sleepiness (EDS) in Parkinson’s disease (PD) patients, and analyze the influence of motor symptoms, treatment, and sex differences on sleep problems in PD.

Methods
Sleep disturbances of 103 PD patients were assessed with Parkinson’s Disease Sleep Scale (PDSS) and the Epworth Sleepiness Scale (ESS). Student’s t-test for related samples, one-way ANOVA with Tukey’s HSD post hoc test were used to assess group differences. Bivariate correlations and mixed-effects linear regression models were used to analyze the association between clinical aspects and sleep disturbances over time.

Results
At baseline, 48.5% of PD patients presented nocturnal problems and 40% of patients presented EDS. The PDSS and ESS total score slightly improve over time. Nocturnal problems were associated with age and motor impartment, explaining the 51% of the variance of the PDSS model. Males presented less nocturnal disturbances and more EDS than females. Higher motor impairment and combined treatment (L-dopa and agonist) were related to more EDS, while disease duration and L-dopa in monotherapy were related to lower scores, explaining the 59% of the model.

Conclusions
Sleep disturbances changed over time and age, diseases duration, motor impairment, treatment and sex were associated with nocturnal sleep problems and EDS. Agonist treatment alone or in combination with L-dopa might predict worse daytime sleepiness, while L-dopa in monotherapy is related to lower EDS, which significantly affects the quality of life of PD patients.
Development of prediction models of spontaneous ureteral stone passage through machine learning: Comparison with conventional statistical analysis
Authors: Park Jee Soo , Kim Dong Wook , Lee Dongu , Lee Taeju , Koo Kyo Chul , Han Woong Kyu , Chung Byung Ha , Lee Kwang Suk 
Published: December 2021

Objectives
To develop a prediction model of spontaneous ureteral stone passage (SSP) using machine learning and logistic regression and compare the performance of the two models. Indications for management of ureteral stones are unclear, and the clinician determines whether to wait for SSP or perform active treatment, especially in well-controlled patients, to avoid unwanted complications. Therefore, suggesting the possibility of SSP would help make a clinical decision regarding ureteral stones.

Methods
Patients diagnosed with unilateral ureteral stones at our emergency department between August 2014 and September 2018 were included and underwent non-contrast-enhanced computed tomography 4 weeks from the first stone episode. Predictors of SSP were applied to build and validate the prediction model using multilayer perceptron (MLP) with the Keras framework.

Results
Of 833 patients, SSP was observed in 606 (72.7%). SSP rates were 68.2% and 75.6% for stone sizes 5–10 mm and <5 mm, respectively. Stone opacity, location, and whether it was the first ureteral stone episode were significant predictors of SSP. Areas under the curve (AUCs) for receiver operating characteristic (ROC) curves for MLP, and logistic regression were 0.859 and 0.847, respectively, for stones <5 mm, and 0.881 and 0.817, respectively, for 5–10 mm stones.

Conclusion
SSP prediction models were developed in patients with well-controlled unilateral ureteral stones; the performance of the models was good, especially in identifying SSP for 5–10-mm ureteral stones without definite treatment guidelines. To further improve the performance of these models, future studies should focus on using machine learning techniques in image analysis.
High-flow nasal cannula for reducing hypoxemic events in patients undergoing bronchoscopy: A systematic review and meta-analysis of randomized trials
Authors: Su Chien-Ling , Chiang Ling-Ling , Tam Ka-Wai , Chen Tzu-Tao , Hu Ming-Chi 
Published: December 2021

Background
Patients undergoing bronchoscopic procedures may develop hypoxemia and severe complications. High-flow nasal cannula (HFNC) may prevent hypoxemic events during bronchoscopy. We conducted a systematic review of randomized controlled trials (RCTs) to evaluate the effectiveness of HFNC in these patients.

Methods
We conducted a search in PubMed, Embase, and the Cochrane Library for RCTs published before November 2021. Individual effect sizes were standardized, and a meta-analysis was performed to calculate the pooled effect size using random-effects models. The primary outcome was the incidence of hypoxemic events (oxygen saturation [SpO2] < 90%) during bronchoscopy. Secondary outcomes included the incidence of interrupted bronchoscopy due to desaturation, lowest SpO2 during bronchoscopy, partial pressure of oxygen (PaO2), partial pressure of carbon dioxide (PaCO2), end-tidal CO2 (EtCO2) at the end of bronchoscopy, and the incidence of intubation after the procedure.

Results
Five trials involving 257 patients were reviewed. The incidence of hypoxemic events was lower in the HFNC group than in the conventional oxygen therapy group (risk ratio, 0.25; 95% confidence interval [CI], 0.14–0.42). The lowest SpO2 during the procedure was significantly higher in the HFNC group than in the conventional oxygen therapy group (weighted mean difference [WMD], 7.12; 95% CI, 5.39–8.84). PaO2 at the end of the procedure was significantly higher in the HFNC group than in the conventional oxygen therapy group (WMD, 20.36; 95% CI, 0.30–40.42). The incidence of interrupted bronchoscopy due to desaturation, PaCO2 and EtCO2 at the end of the procedure, and the incidence of intubation after the procedure were not significantly different between groups.

Conclusions
HFNC may reduce the incidence of hypoxemic events and improve oxygenation in patients undergoing bronchoscopy.
Investigación sobre desinformación en España
Authors: García-Marín David , Salvat Martinrey Guiomar 
Published: December 2021

El fenómeno de la desinformación constituye uno de los grandes desafíos que la investigación en comunicación ha abordado en el último lustro, por lo que resulta necesario establecer un primer estado de la cuestión sobre la respuesta de la academia española hacia esta problemática. A tal fin responde este trabajo, que analiza la investigación sobre desinformación publicada en las revistas científicas españolas desde 2016. El objetivo es descubrir las tendencias en cuanto a los temas abordados y construir una cartografía general de estos objetos de estudio. Se llevó a cabo una revisión sistematizada de la literatura bajo un enfoque mixto que integra un análisis cualitativo-interpretativo y un estudio estadístico descriptivo e inferencial. Aunque la dispersión temática es la nota dominante, se observa una clara tendencia hacia la búsqueda de soluciones para afrontar esta problemática, especialmente desde el campo periodístico, con el análisis del fact-checking como actor principal. Asimismo, existe un elevado interés hacia la dimensión discursiva del fenómeno y el estudio de sus posibles causas; frente a otras temáticas centrales para comprender el problema, como los patrones de propagación del contenido falso y los sesgos que operan en su recepción, que cuentan con escasa presencia en el contexto español.
Subluxación sacroilíaca en un equino criollo colombiano
Authors: GAONA Leonardo , CRUZ Anastasia , DUQUE-MUÑOZ Luis 
Published: December 2021

La subluxación sacroilíaca es una enfermedad claudiocógena de los miembros posteriores que se puede presentar de forma aguda o crónica. La causa de esta patología se debe principalmente a resbalones, tropezones o caídas de los miembros posteriores, el diagnóstico es difícil de realizar debido a la profunda ubicación anatómica de la articulación, métodos como la ecografía y pruebas de estrés entre otros, son los procedimientos más usados en el diagnóstico de la subluxación sacroiliaca. Por tratarse de una alteración que fácilmente puede confundirse con otras condiciones patológicas de la columna, la pelvis y/o de los miembros posteriores, el diagnóstico muchas veces se realiza por eliminación de otras causas de cojera. Los tratamientos convencionales aún se proponen en la literatura, sin embargo, cada vez como opción para el tratamiento de esta patología. El presente reporte describe el caso de un equino criollo que padeció una subluxación sacroiliaca aguda del lado derecho, la cual fue diagnosticada con un examen clínico que incluía ecografía percutánea y transrectal, y tratada con infiltraciones ecoguiadas de corticoides y aspirado de médula ósea. Un mes después de la última terapia, el caballo mostró una mejoría clínica en un 80% a 90% aproximadamente y retoma actividad física controlada.
The impact of corruption on the economic growth in Bangladesh, India and Pakistan: An ARDL approach
Authors: Miah Md. Mamun , Ratna Tahmina Akter , Majumder Shapan Chandra 
Published: December 2021

Purpose of the study: Main purpose of the paper is to find out the impact of corruption on the economic growth of Bangladesh, India, and Pakistan. At the same time, our other objectives are to find the long and short-run effects of corruption on growth in these countries.
Methodology: For conducting the study, we have taken the data from Bangladesh, India, and Pakistan. For this study necessary secondary data have been collected from 1990 to 2016 based on countries like Bangladesh, India, and Pakistan. Data for economic growth (dependent) and trade (independent) are collected from World Development Bank and data for corruption are taken from International Country Risk published by the PRS Group. The study has used ECM ARDL Model and the Fixed Effect Model.
Findings: The result of the fixed effect model shows a 1percent increase in corruption decreases GDP by 0.07 units and shows a negative relationship with economic growth. Again if trade increases by 1 percent then growth will increase by 0.09 units on average and shows a positive relationship with economic growth. ECM ARDL Model shows the positive coefficient of corruption but not significant but trade has a long-run positive influence on economic growth. The error correction term indicating that the adjustment is corrected by 70% in these three countries.
Contributions: This paper may be helpful for existing literature gap and also for further research. It will be helpful for policy makers to control corruption in three countries.
The effect of different structural designs on impact resistance to carbon fiber foam sandwich structures
Authors: Yang Kang , Gong Peng , Yang Li , Zhang Liguo , Zhang Ziao , Ma Gang 
Published: December 2021

Abstract
The development of the composite materials in the past decades has made the composite materials more and more widely used in various engineering fields. The mechanical properties of the composite materials are gradually improved, especially the impact resistance. In this article, the damage of carbon fiber foam sandwich structure (material grade: W-3021FF/H60) under different sandwich thicknesses and impact energies was studied. Ultrasonic C-scan was used to measure the depth and area of impact damage area. Finally, the impact energy and foam core thickness on impact damage was analyzed by test results. The results show that the impact damage depth and area of foam sandwich structure were positively related to the impact energy, and with the increase in the impact energy, the growth rate of damage depth and damage area changes; the greater the thickness of the foam core was, the stronger the span-direction guiding energy for impact energy, the larger the damage area and the smaller the damage depth. Under the same energy, the more the layers of carbon fiber cloth with the foam sandwich structure, the larger the impact damage depth and the smaller the impact damage area. The proportion of ±45° ply in the foam sandwich structure can improve its impact resistance.
Branching Process Modelling of COVID-19 Pandemic Including Immunity and Vaccination
Authors: Atanasov Dimitar , Stoimenova Vessela , Yanev Nikolay M. 
Published: December 2021

Abstract
We propose modeling COVID-19 infection
dynamics using a class of two-type branching processes. These models require only observations on daily statistics to estimate the average number of secondary infections caused by a host and to predict the mean number of the non-observed
infected individuals. The development of the epidemic process depends on the reproduction rate as well as on additional facets as immigration, adaptive immunity, and vaccination. Usually, in the existing deterministic and stochastic models, the officially reported and publicly available data are not sufficient for estimating model parameters. An important advantage of the proposed model, in addition to its simplicity, is the possibility of direct computation of its parameters estimates from the daily available data. We illustrate the proposed model and the corresponding data analysis with data from Bulgaria, however they are not limited to Bulgaria and can be applied to other countries subject to data availability.
Kinetic modelling of microalgal growth and fucoxanthin synthesis in photobioreactor
Authors: Zhang Xiaojuan , Zhao Junru , Zhang Jie , Su Shijing , Huang Luqiang , Ye Jianxiong 
Published: December 2021

Abstract
This paper presented a mathematical model to describe the production of fucoxanthin by alga Thalassiosira weissflogi ND-8 in photobioreactor. Our interest was focused on characterizing the effects of nitrogen and phosphorus on the growth of microalgae and on the synthesis of fucoxanthin. The rate equations of microalgal growth, fucoxanthin synthesis and substrate consumptions were formulated. Kinetic parameters of the model and their sensitivities with respect to model output were estimated. The predicted results were compared with experimental data, which showed that this model closely agrees with actual experiment and is able to reflect the growth and metabolism characteristics of microalgae. Our results also indicated that nitrogen plays a major role in the synthesis of fucoxanthin, and the synthesis of fucoxanthin is partially linearly related to the consumption of nitrogen. Phosphorus is primarily consumed in the growth and metabolism of microalgal cells, while excessive phosphorus concentration has an inhibitory effect on the growth of microalgae.
Target-based terrestrial laser scan registration extended by target orientation
Authors: Janßen Jannik , Kuhlmann Heiner , Holst Christoph 
Published: December 2021

Abstract
In almost all projects, in which terrestrial laser scanning is used, the scans must be registered after the data acquisition. Despite more and more new and automated methods for registration, the classical target-based registration is still one of the standard procedures. The advantages are obvious: independence from the scan object, the geometric configuration can often be influenced and registration results are easy to interpret. When plane black-and-white targets are used, the algorithm for estimating the target center fits a plane through the scan of a target, anyway. This information about the plane orientation has remained unused so far. Hence, including this information in the registration does not require any additional effort in the scanning process.
In this paper, we extend the target-based registration by the plane orientation. We describe the required methodology, analyze the benefits in terms of precision and reliability and discuss in which cases the extension is useful and brings a relevant advantage. Based on simulations and two case studies we find out that especially for registrations with bad geometric configurations the extension brings a big advantage. The extension enables registrations that are much more precise. These are also visible on the registered point clouds. Thus, only a methodological change in the target-based registration improves its results.
Reconfigurable Mach–Zehnder interferometer for dynamic modulations of spoof surface plasmon polaritons
Authors: Cui Wen Yi , Zhang Jingjing , Gao Xinxin , Cui Tie Jun 
Published: December 2021

Abstract
We propose an ultrathin reconfigurable Mach–Zehnder interferometer (MZI) for realizing dynamic frequency and amplitude modulations of spoof surface plasmon (SSP) signal. Active varactor diodes are integrated in the SSP unit cells on one of the MZI arms to introduce asymmetry to the MZI structure, which can control the interference patterns by varying bias voltages applied on the varactor diodes. We show that the spectral positions of multiple sharp interference dips are very sensitive to the change of diode capacitance, thereby allowing for good frequency modulation. We also demonstrate continuous amplitude modulation by tuning the varactor diodes at multiple selected frequencies. To verify the reconfigurable feature of the proposed SSP MZI, the frequency shift keying (FSK) and amplitude modulations have been experimentally demonstrated on the same structure. The modulation depth of the amplitude modulation can be further improved by designing geometrical parameters of the SSP structure, reaching a significant amplitude change from 0.88 to 0.05 in experiments.
Vordenker der Globalisierung
Authors: Paqué Karl-Heinz 
Published: December 2021

Zusammenfassung
Im Jahr 2021 wäre Herbert Giersch 100 Jahre alt geworden. Er war einer der prominentesten deutschen Volkswirte des 20. Jahrhunderts. Die weltumspannende Arbeitsteilung der Köpfe hat er vorausgesehen und herbeigewünscht. In diesem Beitrag würdigt ihn sein Schüler Karl-Heinz Paqué, heute Inhaber des Lehrstuhls für Internationale Wirtschaft an der Otto-von-Guericke-Universität Magdeburg sowie Vorsitzender der Friedrich-Naumann-Stiftung für die Freiheit und der gemeinnützigen Herbert-Giersch-Stiftung.
Small Claim Court as the Alternative of Bad Credit Settlement for Legal Certainty of the Economic Actors
Authors: Pujiyono Pujiyono , Pati Umi Khaerah , Pranoto Pranoto , Tejomurti Kukuh 
Published: December 2021

This article aimed to analyze the problem of legal cases accumulation, especially default on credit contracts in court. It also analyzes the effectiveness of implementing a small claim court in contract default and the independence of a single judge in handling cases through the small claim court mechanism. Small claim court also to offer a breakthrough in the settlement of bad loans related to contract defaults to reduce the burden on courts in Indonesia and provide legal certainty to business actors. The sole judge also examine, resolve and decide on inheritance cases in a fast and efficient process to issue a fair decision for all parties. This normative study was carried out using statutory, case, comparative law, and analysis content approaches. The research results showed that the filing of small claim court increased 10 times from 2015 to 2020, with the plaintiffs dominated by banks in bad credit cases. A small claim court provides benefits the bank and the customer because it speeds up the settlement of the plaintiff's money in a bad credit case with a case value of not more than 500 million, especially for microloans in a maximum period of 25 days. Furthermore, the latest regulation of 2019 concerning small claim court gives judges the authority to confiscate guarantees and conduct auctions to carry out forced executions through the Court Execution Auction process.