bluuebunny/crossref_metadata_2025_split huggingface dataset:
The neutrophil to lymphocyte ratio is an independent predictor for severe COVID-19
Authors: Cheng Jiangli , Ma Aijia , Yang Jing , Dong Meiling , Liao Xuelian , Kang Yan 
Published: August 2021

Summary
Purpose
The aim of this study was to determine whether the neutrophil to lymphocyte ratio (NLR) can predict severe Coronavirus disease 2019 (COVID-19).

Patients and methods
A multicenter case-control study was conducted to investigate whether the NLR can help predict the severity of COVID-19. Patients confirmed to have COVID-19 between 16 January 2020 and 15 March 2020 were enrolled. Furthermore, meta-analyses were conducted based on both previous studies and our case-control study.

Results
In the case-control study, 213 patients (severe: 81) were included. The results suggested that the NLR was an independent risk factor (odds ratio [OR], 1.155, 95% confidence interval [95% CI]: 1.043–1.279, P = 0.006) and a great predictor (the area under the ROC curve was 0.728, 95% CI: 0.656–0.800) for severe COVID-19. In total, 18 datasets from 16 studies combined with our case-control study (severe: 1211; non-severe: 5838) were included in the meta-analyses and the results showed that the NLR of the severe COVID-19 group was significantly higher than that of the non-severe group (SMD = 1.10, 95% CI: 0.90–1.31, P < 0.001). Based on the 2 × 2 data from 6 studies, the SROC of NLR for predicting severe COVID-19 was 0.802, with a sensitivity of 0.67 (95% CI: 0.61–0.72) and a specificity of 0.75 (95% CI: 0.73–0.78).

Conclusion
Based on a multicenter case-control study and a meta-analysis, we found that the initial NLR was a great predictor of severe COVID-19.
Time-dependent degree of conversion, Martens parameters, and flexural strength of different dual-polymerizing resin composite luting materials
Authors: Kelch Matthias , Stawarczyk Bogna , Mayinger Felicitas 
Published: August 2021

Abstract
Objective
To investigate the degree of conversion (DC), Martens hardness (HM), elastic indentation modulus (EIT), and biaxial flexural strength (BFS) of six dual-polymerizing resin composite luting materials initially and after 2 and 7 days of aging.

Materials and methods
Specimens fabricated from Bifix QM (BIF; VOCO), Calibra Ceram (CAL; Dentsply Sirona), DuoCem (DUO; Coltène/Whaledent), G-CEM LinkForce (GCE; GC Europe), PANAVIA V5 (PAN; Kuraray Europe), and Variolink Esthetic DC (VAR; Ivoclar Vivadent) (n = 12 per material) were light-polymerized through 1 mm thick discs (Celtra Duo, Dentsply Sirona). DC, HM, and EIT were recorded directly after fabrication, and after 2 and 7 days of aging. As a final test, BFS was measured. Univariate ANOVAs, Kruskal–Wallis, Mann–Whitney U, Friedman, and Wilcoxon tests, and Weibull modulus were computed (p < 0.05).

Results
While CAL presented low DC, HM, EIT, and BFS values, DUO and BIF showed high results. Highest Weibull moduli were observed for VAR and DUO. DC and Martens parameters increased between the initial measurement and 2 days of aging, while aging for 7 days provided no further improvement.

Conclusions
The choice of dual-polymerizing resin composite luting material plays an important role regarding chemical and mechanical properties, especially with patients sensitive to toxicological issues. DUO may be recommended for bonding fixed dental prostheses, as it demonstrated significantly highest and reliable results regarding DC, HM, and BFS. As DC and HM showed an increase in the first 48 h, it may be assumed that the polymerization reaction is not completed directly after initial polymerization, which is of practical importance to dentists and patients.

Clinical relevance
The chemical and mechanical properties of dual-polymerizing resin composite luting materials influence the overall stability and long-term performance of the restoration.
Fungal Biodiversity Mediates the Effects of Drying on Freshwater Ecosystem Functioning
Authors: Arias-Real Rebeca , Gutiérrez-Cánovas Cayetano , Muñoz Isabel , Pascoal Cláudia , Menéndez Margarita 
Published: August 2021

AbstractInvestigating the influence of biodiversity on ecosystem functioning over environmental gradients is needed to anticipate ecosystem responses to global change. However, our understanding of the functional role of freshwater biodiversity, especially for microbes, is mainly based on manipulative experiments, where biodiversity and environmental variability are minimized. Here, we combined observational and manipulative experiments to analyse how fungal biodiversity responds to and mediates the impacts of drying on two key ecosystem processes: organic matter decomposition and fungal biomass accrual. Our observational data set consists of fungal biodiversity and ecosystem processes from 15 streams spanning a natural gradient of flow intermittence. Our manipulative design evaluates the responses of ecosystem processes to two fungal richness levels crossed with three levels of drying. For the observational experiment, we found that increasing the duration of drying reduced fungal species richness and caused compositional changes. Changes in species composition were driven by species turnover, suggesting resistance mechanisms to cope with drying. We also found that fungal richness had a positive effect on organic matter decomposition and fungal biomass accrual. Positive effects of fungal biodiversity were consistent when controlling for the effects of drying duration on richness by means of structural equation modelling. In addition, our results for the manipulative experiment showed that the positive effects of higher richness on both ecosystem processes were evident even when exposed to short or long simulated drying. Overall, our study suggests that maintaining high levels of biodiversity is crucial for maintaining functional freshwater ecosystems in response to ongoing and future environmental changes.
GrailQuest: hunting for atoms of space and time hidden in the wrinkle of Space-Time
Authors: Burderi L. , Sanna A. , Di Salvo T. , Amati L. , Amelino-Camelia G. , Branchesi M. , Capozziello S. , Coccia E. , Colpi M. , Costa E. , D’Amico N. , De Bernardis P. , De Laurentis M. , Valle M. Della , Falcke H. , Feroci M. , Fiore F. , Frontera F. , Gambino A. F. , Ghisellini G. , Hurley K. C. , Iaria R. , Kataria D. , Labanti C. , Lodato G. , Negri B. , Papitto A. , Piran T. , Riggio A. , Rovelli C. , Santangelo A. , Vidotto F. , Zane S. 
Published: August 2021

AbstractGrailQuest(Gamma Ray Astronomy International Laboratory for QUantum Exploration of Space-Time) is a mission concept based on a constellation (hundreds/thousands) of nano/micro/small-satellites in low (or near) Earth orbits. Each satellite hosts a non-collimated array of scintillator crystals coupled with Silicon Drift Detectors with broad energy band coverage (keV-MeV range) and excellent temporal resolution (≤ 100 nanoseconds) each with effective area$\sim 100 \text {cm}^{2}$∼100cm2. This simple and robust design allows for mass-production of the satellites of the fleet. This revolutionary approach implies a huge reduction of costs, flexibility in the segmented launching strategy, and an incremental long-term plan to increase the number of detectors and their performance; this will result in a living observatory for next-generation, space-based astronomical facilities.GrailQuestis conceived as an all-sky monitor for fast localisation of high signal-to-noise ratio transients in the X-/gamma-ray band, e.g. the elusive electromagnetic counterparts of gravitational wave events. Robust temporal triangulation techniques will allow unprecedented localisation capabilities, in the keV-MeV band, of a few arcseconds or below, depending on the temporal structure of the transient event. The ambitious ultimate goal of this mission is to perform the first experiment, in quantum gravity, to directly probe space-time structure down to the minuscule Planck scale, by constraining or measuring a first-order dispersion relation for lightin vacuo. This is obtained by detecting delays between photons of different energies in the prompt emission of Gamma-Ray Bursts.
Reporting and Investigation of Unmanned Aircraft Systems (UAS) Accidents and Serious Incidents. Regulatory Perspective
Authors: Kasprzyk Piotr Jan , Konert Anna 
Published: August 2021

AbstractNaturally, the ever-growing number of drone operations conducted worldwide carries with it an increase in the number of safety-related incidents and occurrences. The reporting and subsequent investigation of unmanned aircraft system (UAS) accidents and serious incidents seems like a proven solution towards improving operational safety. Such procedures also stem from the fact that UAS are of recognized as aircraft – and aircraft accidents and serious incidents are subject to obligatory investigation. From a technical perspective, a key issue concerns discrepancies in the investigation process as there are significant differences between manned and unmanned aviation operations. From a regulatory perspective, one key question is to what extent should it be obligatory to conduct independent technical investigation of occurrences involving UAS? Such occurrences are not only accidents and serious incidents that involve both UAS and manned aircraft, where “traditional” rules of conducting a full and independent technical investigation apply – the majority occurrences involve only UAS that were either destroyed, damaged or acted as a hazard to third parties. The method of study comprised of content analysis of existing legislation. Current doctrines were confronted with existing regulations, documents, materials, safety reports and statistics. Results of the study shows that the extension of regulations created for manned aviation accident reporting and investigation may not be enough, and certain improvements are necessary, e.g. to standardize the reporting of occurrences and the criteria to conduct a formal accidents and serious incidents investigation. It is also reasonable to take actions aimed at raising awareness among UAS users of the need to report accidents and serious incidents, as well as engage them in the investigative process. The lack of standardization in this field has resulted in the lack of data that is “good enough” to indicate the main causes and factors that contribute to UAS accidents.
Urban poverty: Measurement theory and evidence from American cities
Authors: Andreoli Francesco , Mussini Mauro , Prete Vincenzo , Zoli Claudio 
Published: August 2021

AbstractWe characterize axiomatically a new index of urban poverty that i) captures aspects of the incidence and distribution of poverty across neighborhoods of a city, ii) is related to the Gini index and iii) is consistent with empirical evidence that living in a high poverty neighborhood is detrimental for many dimensions of residents’ well-being. Widely adopted measures of urban poverty, such as the concentrated poverty index, may violate some of the desirable properties we outline. Furthermore, we show that changes of urban poverty within the same city are additively decomposable into the contribution of demographic, convergence, re-ranking and spatial effects. We collect new evidence of heterogeneous patterns and trends of urban poverty across American metro areas over the last 35 years.
Awareness in the void: a micro-phenomenological exploration of conscious dreamless sleep
Authors: Alcaraz-Sanchez Adriana 
Published: August 2021

AbstractThis paper presents a pilot study that explores instances of objectless awareness during sleep: conscious experiences had during sleep that prima facie lack an object of awareness. This state of objectless awareness during sleep has been widely described by Indian contemplative traditions and has been characterised as a state of consciousness-as-such; while in it, there is nothing to be aware of, one is merely conscious (cf. Evans-Wentz, 1960; Fremantle, 2001; Ponlop, 2006). While this phenomenon has received different names in the literature, such as ‘witnessing-sleep’ and ‘clear light sleep’ among others, the specific phenomenological profile of this state has not yet been rigorously studied. This paper aims at presenting a preliminary investigation of objectless consciousness during sleep using a novel tool in qualitative research that can guide future research. Five participants experiencing objectless consciousness during sleep were interviewed following the Micro-phenomenological Interview technique (MPI; Petitmengin, 2005, 2006). All participants reported an experience they had during sleep in which there was no scenery and no dream. This period labelled as ‘No Scenery/Void’ was either preceded by the dissolution of a lucid dream or by other forms of conscious mentation. The analysis of the results advances four experiential dimensions during this state of void, namely (1) Perception of absence, (2) Self-perception, (3) Perception of emotions, and (4) Perception of awareness. While the results are primarily explorative, they refer to themes found in the literature to describe objectless sleep and point at potential avenues of research. The results from this study are taken as indications to guide future operationalisations of this phenomenon.
Seeking Alpha in the Housing Market
Authors: LaCour-Little Michael , Yang Jing 
Published: August 2021

AbstractWe examine short term trades in the housing market over the period 2000–2013 using nationally representative data across multiple U.S. housing markets. Such trades, often characterized as “house flipping”, have gained currency in recent years with reality television shows depicting success and failure. We find evidence of returns in excess of market house price index growth (which we call alpha) during certain time periods with results that also vary across distressed versus non-distressed acquisition strategies.
Systemic constellations applied in organisations: a systematic review
Authors: Scholtens Salome , Petroll Carla , Rivas Carlos , Fleer Joke , Konkolÿ Thege Barna 
Published: August 2021

AbstractThis article—published in the Journal Gruppe. Interaktion. Organisation.— presents a systematic overview of the current empirical evidence of the effectiveness of the systemic constellation method when applied in organisations.Although the systemic constellation method is increasingly used for team coaching, organisational development and transformation processes, among others, scientific evidence on the effectiveness and quality of this method is still scarce. This may hamper the broader implementation of a potentially useful approach. Altogether, ten electronic databases were searched up to January, 2020. Multiple languages, qualitative and quantitative designs, and academic and grey literature were included. The search resulted in the identification of 79 potentially relevant publications, seven of which were prospective and 13 were retrospective effectiveness studies in terms of organisational outcomes. Only two of the seven prospective studies used a controlled design. This review concludes that the empirical evidence on the systemic organisational constellation method points toward a potentially effective intervention in the organisational context. However, it is too early to make firm conclusions as the number of studies was small and quality of the studies was low in general.The present systematic review summarises the literature on the systemic constellation method applied in organisations. It offers coaches and consultants insights into the method from a scientific perspective and describes potential mechanisms of action regarding the intervention. The results of the review provide a solid basis for future research and give directions for new studies to support quality improvement and help us better understand the factors influencing effectiveness.
Kollektive Intelligenz und Psychologische Sicherheit: Haben wir Intelligenz im Gefühl?
Authors: Feldhusen Birgit 
Published: August 2021

ZusammenfassungPsychologische Sicherheit und Kollektive Intelligenz sind zwei Konzepte, die sich bislang in der Erforschung von Gruppenlernen und Kollaboration als förderlich erwiesen haben. Ersteres steht für ein gutes Teamklima, in dem sich jeder einzubringen vermag, Letzteres steht für die Fähigkeit einer Gruppe, in immer wieder neuen Umfeldern Lösungen und Lernen hervorzubringen. Überraschenderweise besitzen beide keinen förderlichen Einfluss aufeinander. Sie wirken auf die Arbeits- und Lernfähigkeit von Gruppen über zwei unterschiedliche Pfade, die einander kompensieren, aber nicht stärken können. Beide verlangen einen Reifeprozess in der menschlichen Interaktion, jedoch aus zwei unterschiedlichen Perspektiven: einer ich-zentrierten und einer situations-zentrierten bzw. selbst-transzendierenden Perspektive.
Correlation between Taylor Model Prediction and Transmission Electron Microscopy-Based Microstructural Investigations of Quasi-In Situ Tensile Deformation of Additively Manufactured FeCo Alloy
Authors: Pramanik Sudipta , Tasche Lennart , Hoyer Kay-Peter , Schaper Mirko 
Published: August 2021

AbstractWithin this research, the multiscale microstructural evolution before and after the tensile test of a FeCo alloy is addressed. X-ray µ-computer tomography (CT), electron backscattered diffraction (EBSD), and transmission electron microscopy (TEM) are employed to determine the microstructure on different length scales. Microstructural evolution is studied by performing EBSD of the same area before and after the tensile test. As a result, $$\langle$$
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Evaluation of Resting Energy Expenditure in Subjects with Severe Obesity and Its Evolution After Bariatric Surgery
Authors: Fidilio Enzamaria , Comas Marta , Giribés Miguel , Cárdenas Guillermo , Vilallonga Ramón , Palma Fiorella , Peláez Rosa Burgos , Simó Rafael , Ciudin Andreea 
Published: August 2021

Abstract
Purpose
One major determinant of weight loss is resting energy expenditure (REE). However, data regarding REE is scarce in patients with severe obesity (SO)—BMI>50kg/m2. Most studies used equation in order to estimate REE and not indirect calorimetry (IC) (gold standard). Additionally, there is no reliable data on the impact of bariatric surgery (BS) on REE.

Objectives
(a) To evaluate the REE in patients with SO; (b) to compare REE measured by IC (mREE) to that calculated by Mifflin St-Jeor equation (eREE); (c) to evaluate the impact of BS on REE and the relationship with evolution post-BS.

Material and Methods
Single-center observational study including consecutive patients with SO between January 2010 and December 2015, candidates for BS. mREE was determined at baseline, and 1 and 12 months post-BS by IC, using a Vmax metabolic monitor.

Results
Thirty-nine patients were included: mean age 46.5±11.77 years, 64.1%women. Preoperative mREE was 2320.38±750.81 kcal/day. One month post-BS, the mREE significantly decreased (1537.6 ± 117.46 kcal/day, p = 0.023) and remained unchanged at 12 months (1526.00 ± 123.35 kcal/day; p =0.682). Reduction in mREE after the BS was a predictor of reaching successful weight loss (nadir) and weight regain (5 years follow-up) (AUCROC of 0.841 (95%CI [0.655–0.909], p=0.032) and AUCROC of 0.855 (95% CI [0.639–0.901]), p= 0.027, respectively). eREE was not valid to identify these changes.

Conclusion
In patients with SO, a significant reduction of mREE occurs 1 month post-BS, unchanged at 12 months, representing the major conditioning of successful weight loss and maintenance post-BS.

Graphical abstract
RETRACTED ARTICLE: Improving the reconstruction of dental occlusion using a reconstructed-based identical matrix point technique
Authors: Anil Sukumaran , Vellappally Sajith , Al Kheraif Abdulaziz A. , Divakar Darshan Devang , Said Wael , Hassanein Azza S. 
Published: August 2021

AbstractDigital dental models are widely used compared to dental impressions or plaster-dental models for occlusal analysis as well as fabrication of prosthodontic and orthodontic appliances. The digital dental model has been considered as one of the significant measures for the analysis of dental occlusion. However, the process requires more computation time with less accuracy during the re-establishment of dental occlusion. In this research, a modern method to re-establish dental occlusion has been designed using a Reconstructed-based Identical Matrix Point (RIMP) technique. The curvature of the dental regions has been reconstructed using distance mapping in order to minimize the computation time, and an iterative point matching approach is used for accurate re-establishment. Satisfactory restoration and occlusion tests have been analyzed using a dental experimental setup with high-quality digital camera images. Further, the high-quality camera images are converted to grayscale images for mathematical computation using MATLAB image processing toolbox. Besides, 70 images have been taken into consideration in which 30 planar view images has been utilized for experimental analysis. Indeed, based on the outcomes, the proposed RIMP outperforms overall accuracy of (91.50%) and efficiency of (87.50%) in comparison with conventional methods such as GLCM, PCR, Fuzzy C Means, OPOS, and OGS.
How Sex Workers Understand Their Experiences of Working in the Republic of Ireland
Authors: Berry Adeline , Frazer Patricia 
Published: August 2021

AbstractIntroductionThis study seeks to explore the ways in which sex workers understand their experiences of working under sex work legislation in the Republic of Ireland, including laws that criminalise the purchase of sexual services. Participants reflected on their experiences of working in Ireland both and after the passing of [the] Criminal Law (Sexual Offences) Act 2017. In 2017, the Republic of Ireland criminalised the purchase of sexual services and increased fines and sentences for brothel keeping.MethodIn 2020, semi-structured interviews lasting 60 to 90 min were conducted with 6 sex workers from diverse backgrounds, ages 24–44, actively working in Ireland since 2017. Interviews were recorded and transcribed verbatim. Transcriptions were used to conduct an interpretative phenomenological analysis.ResultsSeven themes arose from the data: psychological wellbeing, relationships with law enforcement, relationships with friends and family, the effects of client criminalisation laws on clients, benefits of sex work community, stress related to precarious accommodation and experiences of both discrimination and perceived discrimination.ConclusionChanges to sex work legislation appear to have failed in their mission to improve life for sex workers in Ireland. Other options such as decriminalisation should be considered.