bluuebunny/crossref_metadata_2025_split huggingface dataset:
Femoral defects in revision hip arthroplasty: a therapy-oriented classification
Authors: Jaenisch Max , Kohlhof Hendrik , Kasapovic Adnan , Gathen Martin , Randau Thomas Martin , Kabir Koroush , Roessler Philip Peter , Pagenstert Geert , Wirtz Dieter Christian 
Published: October 2021

Abstract
Introduction
The complex field of femoral defects in revision hip arthroplasty displays a lack of standardized, intuitive pre- and intraoperative assessment. To address this issue, the femoral defect classification (FDC) is introduced to offer a reliable, reproducible and an intuitive classification system with a clear therapeutic guideline.

Materials and methods
The FDC is based on the integrity of the main femoral segments which determine function and structural support. It focuses on the femoral neck, the metaphysis consisting of the greater and lesser trochanter, and the femoral diaphysis. The four main categories determine the location of the defect while subcategories a, b and c are being used to classify the extent of damage in each location. In total, 218 preoperative radiographs were retrospectively graded according to FDC and compared to intraoperatively encountered bone defects. To account for inter-rater and intra-rater agreement, 5 different observers evaluated 80 randomized cases at different points in time.

Results
A Cohens kappa of 0.832 ± 0.028 could be evaluated, accounting for excellent agreement between preoperative radiographs and intraoperative findings. To account for inter-rater reliability, 80 patients have been evaluated by 5 different observers. Testing for inter-rater reliability, a Fleiss Kappa of 0.688 could be evaluated falling into the good agreement range. When testing for intra-rater reliability, Cohens Kappa of each of the 5 raters has been analyzed and the mean was evaluated at 0.856 accounting for excellent agreement.

Conclusion
The FDC is a reliable and reproducible classification system. It combines intuitive use and structured design and allows for consistent preoperative planning and intraoperative guidance. A therapeutic algorithm has been created according to current literature and expert opinion. Due to the combination of the FDC with the recently introduced Acetabular Defect Classification (ADC) a structured approach to the entire field of hip revision arthroplasty is now available.
Cognitive, behavioral, and psychological manifestations of COVID-19 in post-acute rehabilitation setting: preliminary data of an observational study
Authors: Bonizzato Silvia , Ghiggia Ada , Ferraro Francesco , Galante Emanuela 
Published: October 2021

AbstractPsychological, emotional, and behavioral domains could be altered in COVID-19 patients and measurement of variables within these domains seems to be mandatory. Neuropsychological assessment could detect possible cognitive impairment caused by COVID-19 and the choice of appropriate tools is an important question. Aim of this exploratory study was to verify the effectiveness of an assessment model for patients with COVID-19. Twelve patients were enrolled and tested with Mini-Mental State Examination (MMSE), Montreal Cognitive Assessment (MoCA), Anxiety and Depression Short Scale (AD-R), and the Neuropsychiatry Inventory (NPI), at the time of their entrance (T0) and discharge (T1) from a rehabilitative unit. Moreover, a follow-up evaluation after 3 months (T2) has been conducted on eight patients. Results showed that at baseline (T0), 58.3% of the patients reported a score below cut-off at MMSE and 50% at MoCA. Although a significant amelioration was found only in NPI scores, a qualitative improvement has been detected at all tests, except for MoCA scores, in the T0-T1 trend analysis. A one-way repeated measures analysis of variance showed a significant variation in AD-R depression score, considering the three-assessment time (T0, T1, and T2). The evaluation and tracking over time of the impact of COVID-19 on cognitive, psychological, and behavioral domains has relevant implications for rehabilitation and long-term assistance needs planning. The choice of assessment tools should consider patients vulnerability and match the best compromise among briefness, sensitivity, and specificity.
Drift Estimation of Multiscale Diffusions Based on Filtered Data
Authors: Abdulle Assyr , Garegnani Giacomo , Pavliotis Grigorios A. , Stuart Andrew M. , Zanoni Andrea 
Published: October 2021

AbstractWe study the problem of drift estimation for two-scale continuous time series. We set ourselves in the framework of overdamped Langevin equations, for which a single-scale surrogate homogenized equation exists. In this setting, estimating the drift coefficient of the homogenized equation requires pre-processing of the data, often in the form of subsampling; this is because the two-scale equation and the homogenized single-scale equation are incompatible at small scales, generating mutually singular measures on the path space. We avoid subsampling and work instead with filtered data, found by application of an appropriate kernel function, and compute maximum likelihood estimators based on the filtered process. We show that the estimators we propose are asymptotically unbiased and demonstrate numerically the advantages of our method with respect to subsampling. Finally, we show how our filtered data methodology can be combined with Bayesian techniques and provide a full uncertainty quantification of the inference procedure.
Bank business models, negative policy rates, and prudential regulation
Authors: Savona Roberto 
Published: October 2021

AbstractUsing data from Italian banks over the period 2011–2017, we study how negative interest rate policy and prudential regulation impact on bank business models. We report four key findings. First, banks shifted into retail- and market-oriented business models. Second, high- and low-deposit banks reduced loans and increased security/liquid assets; only market-oriented banks expanded lending. Third, interest rate income compression induced by negative rates has been substantial for the Italian banking system as a whole, although retail banks seem to have suffered less. Fourth, non-interest incomes played a compensatory effect. The portfolio reshuffling, as we observed for wholesale and retail banks (less lending and more securities/liquid assets), is related to the goal of reducing risk exposures and, in turn, the connected capital absorption required by prudential regulation.
Stigmergic electronic gates and networks
Authors: Ianero Biagio , Bile Alessandro , Alonzo Massimo , Fazio Eugenio 
Published: October 2021

AbstractStigmergy is a communication method based on changing the surrounding environment according to reference feedbacks. It is typical within animal colonies that are able to process even complex information by releasing signals into the environment, which are subsequently received and processed by other elements of the colony. For example, ants searching for food leave traces of a pheromone, like Hansel and Gretel’s breadcrumbs, along the way. When food is found, they return to the anthill reinforcing this pheromone trace as a signal and reminder to all the others. Similar techniques are used in routing software even if stigmergic hardware might be even more efficient, fast, and energy saving. Recently, a stigmergic photonic gate based on soliton waveguides has been proposed; this particular stigmergic hardware can switch the output ratio of the channels as a result of optical feedback. Based on these results, in this study, we analyze stigmergic electronic gates that can be addressed through external feedback, as the photonic ones do. We show that the nonlinear response of such gates must be based on quadratic saturating conductances driven by feedback signals. For this purpose, networks of stigmergic gates require two parallel and communicating current circuits: one to transmit information, and another for feedback signals to control the gate switching. We also show that by increasing the number of terminals per single gate, from 2 × 2 to 3 × 3 or higher, the overall power consumption can be reduced by a few orders of magnitude.
Mortars, plasters and pigments—research questions and sampling criteria
Authors: Gliozzo Elisabetta , Pizzo Antonio , La Russa Mauro Francesco 
Published: October 2021

AbstractWithin the Topical Collection, this paper represents an introductory contribution aimed at describing and discussing the research questions and the sampling criteria in the field of mortars, plasters and pigments studies. The paper is divided into three parts. In the first part, some terminological issues are clarified and the building archaeology is introduced as an indispensable method for sampling and interpreting archaeometric results. In the second part, the most common research questions are presented and discussed. Some case studies are also reported to clarify what the expected results may be. The sampling problem is faced in the third part, where the criteria for a representative, functional and suitable selection are provided.
Characterizing the pigments and paints of prehistoric artists
Authors: Domingo Inés , Chieli Annalisa 
Published: October 2021

AbstractThis paper offers a broad and critical overview of current discussions on the potential uses and the characterization of pigments in prehistory, with a special focus on prehistoric rock art. Today, analytical approaches to pigments and paints allow us to go beyond the identification of the elemental and molecular composition of these archaeological remains, to explore also raw material procurement, transformation and use strategies of interest to investigate the technological and socio-cultural practices of prehistoric artists and their change over space and time. The paper also summarizes the palette of prehistoric artists, as well as the techniques and analytical strategies used to date to characterize prehistoric pigments and paints (colours, raw materials, binders and recipes) used in prehistoric rock art.
Production, transport and on-site organisation of Roman mortars and plasters
Authors: DeLaine Janet 
Published: October 2021

AbstractThis paper examines the role of mortars and plasters in the construction process during the Roman period and seeks to elucidate the chaîne opératoire from the production of the main ingredients — lime and aggregate — to their application in structures, based on archaeological, visual and archaeometric data. As well as looking at the actual processes involved, it also considers the functional requirements of the mortars and plasters and the economic implications of their use, especially the nature and cost of transport, which may have led to particular choices being made by Roman builders; it also considers the supply of materials in terms of the logistics of construction. The emphasis is on mortared rubble construction, which was a particular development of the Roman period from the second century BCE and required much larger quantities of lime than previous building techniques. Attention is also paid to the human actions involved and the tools employed.
Quiet Revolution by SMEs in the midstream of value chains in developing regions: wholesale markets, wholesalers, logistics, and processing
Authors: Reardon Thomas , Liverpool-Tasie Lenis Saweda O. , Minten Bart 
Published: October 2021

AbstractSmall and medium enterprises (SMEs) in the midstream (processors, wholesalers and wholesale markets, and logistics) segments of transforming value chains have proliferated rapidly over the past several decades in Africa, Asia, and Latin America. Their spread has been most rapid in the long transitional stage between the traditional and modern stages, when value chains grow long and developed with urbanization but are still fragmented, before consolidation. Most of Sub-Saharan Africa and South Asia, and parts of the other regions, are in that stage. The midstream SMEs in output and input value chains are important to overall food security (moving about 65% of food consumed in Africa and South Asia), and to employment, farmers, poor consumers, and the environment. The midstream of value chains is neglected in the national and international debates as the “missing middle.” We found that it is indeed not missing but rather hidden from the debate, hence “the hidden middle.” The midstream SMEs grow quickly and succeed where enabling conditions are present. Our main policy recommendations are to support the SMEs further growth through a focus on infrastructure investment, in particular on wholesale markets and roads, a reduction of policy-related constraints such as excessive red tape, and regulation for food safety and good commercial practices.
Verstehensangebote von YouTube-Erklärvideos – Konzeptualisierung und Analyse am Beispiel algebraischer Konzepte
Authors: Korntreff Stefan , Prediger Susanne 
Published: October 2021

ZusammenfassungÖffentlich zugängliche Erklärvideos werden immer häufiger genutzt. In Frage gestellt wurde jedoch ihre fachdidaktische Qualität, vor allem inwiefern sie hinreichende Lerngelegenheiten zum Aufbau von konzeptuellem Verständnis für tiefgreifende mathematische Konzepte wie Variable und Term anbieten. Zur theoretisch fundierten und forschungsbasierten Klärung dieser Frage schlägt der Artikel eine fachdidaktische Konzeptualisierung und gegenstandsbezogene Operationalisierung für Verstehensangebote von Erklärvideos vor: als Vorkommen, Auffalten und Vernetzen relevanter Verstehenselemente der Konzepte. Für eine solche Operationalisierung sind die relevanten Verstehenselemente der elementaren Algebra zunächst stoffdidaktisch zu spezifizieren. Die empirische Studie berichtet aus der gegenstandsbezogenen qualitativen Analyse von 50 YouTube-Videos, ausgewählt von den meistgeschauten Kanälen. Die Analyse zeigt, dass alle zu erwartenden Verstehenselemente in den Erklärvideos vorkommen, wenn auch mit unterschiedlichen Priorisierungen (z. B. wenig Unbestimmten-Deutung). Explizit aufgefaltet werden Variablendeutungen im Zusammenhang mit Termen und Gleichungen selten, das Vernetzungspotential ist sehr heterogen. Einige positive Ausnahmen geben Aufschluss darüber, wie Auffalten und Vernetzen umgesetzt und wie hohe Erklärqualität sprachlich realisiert werden kann. Die vorgeschlagene Konzeptualisierung und Operationalisierung der Verstehensangebote von Erklärvideos über die gegenstandsspezifische Analyse der vorkommenden, aufgefalteten und vernetzten Verstehenselemente kann auch für andere fachliche Konzepte adaptiert werden.
Infinite groups with many complemented subgroups
Authors: Ferrara M. , Trombetti M. 
Published: October 2021

AbstractThis paper has two souls. On one side, it is a survey on (infinite) groups in which certain systems of subgroups are complemented (like for instance the abelian subgroups). On another side, it provides generalizations and new, easier proofs of some (un)known results in this area.
“Evaluating and Managing Tardive Dyskinesia in the Older Adult”
Authors: Ghosn Omar , Ye Enstin , Huege Steven 
Published: October 2021

Abstract

Purpose of Review

Tardive dyskinesia is an iatrogenic hyperkinetic movement disorder caused by chronic exposure to antidopaminergic agents. The older adult population is particularly vulnerable to developing TD. It is also more difficult to discern the condition given the confounding medical comorbidities that may present at this age including Parkinson’s and other movement disorders that may mimic TD.

Recent Findings

This paper reviews the most common risk factors, including both modifiable and non-modifiable risk factors. Additionally, the possible causes and proposed pathways of TD and how to correctly diagnose and evaluate TD are discussed. We then focus on how to prevent and manage TD given the current and evolving body of knowledge and evidence. Our stepwise management approach starts by frequent monitoring, discontinuing the culprit antipsychotic, decreasing the dose otherwise; followed by switching to less potent antipsychotics and prescribing VMAT-2 inhibitors. VMAT-2 inhibitors, initially approved for management of Huntington's disease, have been recently showing favorable results in treating other hyperkinetic movement disorders like Tourette’s disease, quickly becoming the first line in the treatment of tardive dyskinesia. The properties of the three different agents belonging to this class: tetrabenazine, deutetrabenazine, and valbenazine will be examined, including side-effect profiles. Finally, recent investigational agents and treatment modalities, including neuromodulation (TMS and DBS) will be reviewed that can be considered when conventional treatment fails or is not tolerated.

Summary

Older adults treated with antidopaminergic medications are at greatest risk for development of tardive dyskinesia. It is important to recognize risk factors and accurately diagnose TD early. New FDA-approved treatments and investigational agents are now available to manage the condition, however further research to optimally prevent and manage TD in the older adult population remains necessary.
A massive natural disaster, the Great East Japan Earthquake, and the incidence of dialysis due to end-stage kidney disease
Authors: Abe Michiaki , Akaishi Tetsuya , Ishizawa Koto , Shinano Hirohisa , Ohtomo Hiroshi , Orikasa Kazuhiko , Takayama Shin , Masaura Atsuko , Miyazaki Mariko , Abe Takaaki , Yokota Kenichi , Ishii Tadashi 
Published: October 2021

Abstract
Background
Disaster-related stress can increase blood pressure and the incidence of cardiovascular diseases. However, the role of massive disasters in the development of end-stage kidney disease (ESKD) remains unknown. We investigated the incidence and different causes of dialysis initiation in patients with chronic kidney disease in a city affected by the Great East Japan Earthquake.

Methods
This was a single-center, retrospective observational study. All patients who initiated or were treated with dialysis at Kesennuma City Hospital between 2007 and 2020 were enrolled. The year of dialysis initiation was retrospectively determined based on the initiation date. The causative renal diseases that led to the need for dialysis initiation were divided into four groups: diabetic nephropathy, hypertensive renal disease, glomerulonephritis, and others.

Results
Age at dialysis initiation differed significantly among the four groups (p = 0.0262). There was a significant difference in the numbers of the four groups before and after the Great East Japan Earthquake (p = 0.0193). The age of hypertensive renal disease patients was significantly higher than those of patients with diabetic nephropathy (p = 0.0070) and glomerulonephritis (p = 0.0386) after the disaster. The increasing number of dialysis initiations after the Great East Japan Earthquake appeared to be associated with changes in hypertensive renal diseases; the number peaked after 10 years.

Conclusions
There was an increase in the number of dialysis initiations, especially caused by hypertensive renal diseases, for up to 10 years after the Great East Japan Earthquake.

Graphic abstract
Position-dependent mechanical characterization of the PBF-EB-manufactured Ti6Al4V alloy
Authors: Kotzem Daniel , Höffgen Alexandra , Raveendran Rajevan , Stern Felix , Möhring Kerstin , Walther Frank 
Published: October 2021

AbstractBy means of additive manufacturing, the production of components with nearly unlimited geometrical design complexity is feasible. Especially, powder bed fusion techniques such as electron beam powder bed fusion (PBF-EB) are currently focused. However, equal material properties are mandatory to be able to transfer this technique to a wide scope of industrial applications. Within the scope of this work, the mechanical properties of the PBF-EB-manufactured Ti6Al4V alloy are investigated as a function of the position on the building platform. It can be stated that as-built surface roughness changes within building platform whereby highest surface roughness detected by computed tomography (Ra = 46.0 ± 5.3 µm) was found for specimens located in the front of the building platform. In contrast, no significant differences in relative density could be determined and specimens can be assumed as nearly fully dense (> 99.9%). Furthermore, all specimens are affected by an undersized effective diameter compared to the CAD data. Fatigue tests revealed that specimens in the front of the building platform show slightly lower performance at higher stress amplitudes as compared to specimens in the back of the building platform. However, process-induced notch-like defects based on the surface roughness were found to be the preferred location for early crack initiation.
Promoting the Emergence of Team Flow in Organizations
Authors: van den Hout Jef J. J. , Davis Orin C. 
Published: October 2021

AbstractAn important question in the field of team research is how teams can optimize their collaboration to maximize their performance. When team members who are collaborating towards a common purpose experience flow together, the team, as a performing unit, improves its performance and delivers individual happiness to its members. From a practical point of view, it is relevant to know how team flow experiences arise within professional organizations. The aim of this study is therefore to get more insight into the how the elements of team flow emerge. We conducted interviews with team members, business leaders, and team experts, and in addition a survey with team members. The results provide confirmation of the existing research on team dynamics, flow, group and team flow and indicate that a collective ambition, professional autonomy, and open communication must be deliberately and carefully cultivated to set the stage for the other team flow prerequisites and thence for team flow to emerge.
Psychoacoustic evaluation of internal combustion engine noises
Authors: Schneider Sebastian , Luft Tommy , Rottengruber Hermann 
Published: October 2021

AbstractWhen buying a car, the acoustic impression of quality of a vehicle drive train is becoming more and more relevant. The perceived sound quality of the engine unit plays a key role here. Due to the nature of individual background noises, that sound quality is negatively influenced. These noise components, which are perceived as unpleasant, need to be further reduced in the course of vehicle development with the identification and evaluation of disruptive noise components in the overall engine noise being a prerequisite for effective acoustics optimization. In particular, the pulsed ticker noise is classified as particularly annoying in Otto DI engines, which is why this article aims to analyze and evaluate the ticking noise components from the overall noise. For this purpose, an empirical formula was developed which can classify the ticking noise components in terms of their intensity. This is purely perception-based and consists of the impulsiveness, the loudness and the sharpness of the overall engine noise. As with other psychoacoustic evaluation scales, the rating was made from 1 (very ticking) to 10 (not ticking). The ticker noise evaluation formula was then verified on the basis of hearing tests with the help of a jury of experts. According to this, it can be predicted precisely in which engine map areas the ticker noise undermines the pleasantness of the overall engine noise.