bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Regge limit of AdS3 holographic correlators with heavy states: towards the black hole regime
Authors: Čeplak Nejc , Hughes Marcel R. R. 
Published: July 2021

Abstract
We examine the Regge limit of holographic 4-point correlation functions in AdS3× S3 involving two heavy and two light operators. In this kinematic regime such correlators can be reconstructed from the bulk phase shift accumulated by the light probe as it traverses the geometry dual to the heavy operator. We work perturbatively — but to arbitrary orders — in the ratio of the heavy operator’s conformal dimension to the dual CFT2’s central charge, thus going beyond the low order results of [1] and [2]. In doing so, we derive all-order relations between the bulk phase shift and the Regge limit OPE data of a class of heavy-light multi-trace operators exchanged in the cross-channel. Furthermore, we analyse two examples for which the relevant 4-point correlators are known explicitly to all orders: firstly the case of heavy operators dual to AdS3 conical defect geometries and secondly the case of non-trivial smooth geometries representing microstates of the two-charge D1-D5 black hole.
Islands and mixed states in closed universes
Authors: Fallows Seamus , Ross Simon F. 
Published: July 2021

Abstract
We investigate the appearance of islands when a closed universe with gravity is entangled with a non-gravitating quantum system. We use braneworlds in three-dimensional multiboundary wormhole geometries as a model to explore what happens when the non-gravitating system has several components. The braneworld can be either completely contained in the entanglement wedge of one of the non-gravitating systems or split between them. In the former case, entanglement with the other system leads to a mixed state in the closed universe, unlike in simpler setups with a single quantum system, where the closed universe was necessarily in a pure state. We show that the entropy of this mixed state is bounded by half of the coarse-grained entropy of the effective theory on the braneworld.
Patient beliefs and perceptions play a crucial role in the decision-making process when managing a meniscal tear. A qualitative systematic review of the literature
Authors: Ahmed Imran , Dhaif Fatima , Abram Simon G. F. , Parsons Nick , Hutchinson Charles , Price Andrew , Staniszewska Sophie , Metcalfe Andrew 
Published: July 2021

Abstract
Introduction
There has been an increase in research on the effectiveness of treatment options for the management of meniscal tears. However, there is very little evidence about the patient experiences of meniscal tears.

Aim
To summarise the available qualitative evidence on patients’ experiences and expectations of meniscal tears.

Method
A search of EMBASE, Medline, Sociofile and Web of Science up to November 2020 was performed to identify studies reporting patient experiences of meniscal tears. Studies were critically appraised using the CASP (Critical Appraisal Skills Program) checklist, and a meta-synthesis was performed to generate third-order constructs (new themes).

Results
Two studies reporting semi-structured interviews from 34 participants (24 male; 10 female) were included. The mean interview length ranged from 16 to 45 min. Five themes were generated: (1) the imaging (MRI) results are a key driver in the decision-making process, (2) surgery is perceived to be the definitive and quicker approach, (3) physiotherapy and exercise is a slower approach which brought success over time, (4) patient perceptions and preferences are important in the clinical decision-making process and, (5) the impact on patient lives is a huge driver in seeking care and treatment decisions.

Conclusion
This is the first study to summarise the qualitative evidence on patient experiences with meniscal tears. The themes generated demonstrate the importance of patient perceptions of MRI findings and timing of treatment success as important factors in the decision-making process. This study demonstrates the need to strengthen our understanding of patients’ experiences of meniscal tears.
Micro-mechanical modeling of the paper compaction process
Authors: Ceccato Chiara , Brandberg August , Kulachenko Artem , Barbier Christophe 
Published: July 2021

AbstractDouble-roll compaction is a process to create extensible paper and paperboard suitable for replacing plastic in 3D forming applications. Understanding the macro- and micro-mechanisms governing the compaction process allows increasing the stretch potential while maintaining sufficient strength and bending stiffness. In this work, we approach the compaction process of paperboard with micro-mechanical methods featuring the unprecedented level of details otherwise inaccessible with currently available experimental tools. The loading scheme is based on experiments and continuum level simulations. The different levels of compaction and their continuous impact on the fibers’ geometry, void closures, and irreversible deformation of the fibers are thoroughly characterized. We find that the structural changes are concentrated in the fibers oriented within 30 degrees of the direction of compaction. The deformation accumulates primarily in the wall of the fibers in the form of irreversible strains. The spring-back effect beyond the compaction is negligible. For the first time, the role of normal and frictional fiber-to-fiber interactions in the compaction process is investigated and quantified. The frictional interaction between the fibers has a surprisingly low impact on the outcome of the compaction process, and the normal interaction between the fibers has a dominant response. The consequence of this finding is potentially limited impact of the surface modifications targeting the friction.
Scuffing load capacity calculation of worm gears
Authors: Roth Philipp , Hein Michael , Stahl Karsten 
Published: July 2021

AbstractWorm gears with wheels of harder materials, such as cast iron or steel, are often prone to the damage type scuffing, which can cause a sudden and rapid failure of the gear box. Contact temperature is a suitable criterion to determine the scuffing safety for other types of gears. However, for worm gears, a scuffing load capacity calculation is not available at the moment. This paper presents a numerical temperature simulation for worm gears that considers transient multidimensional heat transfer and local frictional loading due to the contact. Based on the results of this simulation, this paper derives a simplified calculation of worm gear contact temperatures. The calculation only contains input parameters that are already part of current standards. Its result, the contact temperature of worm gears, can be used to rate the scuffing load capacity.
Entwicklungen des Insektizid-Einsatzes in Winterraps (Brassica napus L.) infolge des Anwendungsverbotes neonicotinoider Beizen
Authors: Andert Sabine , Ziesemer Andrea 
Published: July 2021

ZusammenfassungDer Anbau von Winterraps (Brassica napus L.) wird durch das Auftreten tierischer Schaderreger begleitet, wodurch ein intensiver Insektizid-Einsatz nötig ist. Insbesondere das Anwendungsverbot neonicotinoider Beizen in Winterraps schränkt jedoch die Möglichkeiten der Insektenbekämpfung für landwirtschaftliche Betriebe in der Europäischen Union (EU) ein. Die vorliegende Studie untersucht den Insektizid-Einsatz landwirtschaftlicher Praxisbetriebe, um die Auswirkungen des Anwendungsverbotes neonicotinoider Beizen in Deutschland zu identifizieren. Die feldspezifischen Anbau- und Insektizid-Daten der Referenzbetriebe Mecklenburg-Vorpommern ermöglichen eine detaillierte Analyse des Insektizid-Einsatzes und einen Vergleich der Anwendungsmuster von Insektiziden im Zeitraum der Zulassung neonicotinoider Beizen (2012–2014) und dem darauffolgenden Zeitraum seit dem Anwendungsverbot (2015–2019). Als Maßzahlen für die Insektizid-Intensität werden der Behandlungsindex (BI) und die Anzahl der Überfahrten mit Insektiziden ausgewertet. Die Ergebnisse belegen einen signifikanten Anstieg des Insektizid-Einsatzes in Winterraps im Zeitverlauf 2012–2019. Die mittlere Insektizid-Intensität der Flächenapplikationen ist infolge des Anwendungsverbotes neonicotinoider Beizen um 22,5 % angestiegen. Die Anzahl der Überfahrten mit Insektiziden ist um 1,1 erhöht, dies entspricht einer zusätzlichen Überfahrt mit Insektiziden mit der maximal zugelassenen Aufwandmenge. In der Auflaufphase und den frühen Entwicklungsstadien der Pflanzen (Herbst) hat sich die Insektizid-Intensität vervierfacht. Saattermine und Saatstärken variieren zwischen den Erhebungsjahren, zeitliche Verschiebungen des Saattermins oder eine Anpassung der Saatstärke infolge des Anwendungsverbots neonicotinoider Beizen wurden jedoch nicht identifiziert. 41 % der Referenzbetriebe Mecklenburg-Vorpommern setzten die insektizide Beize Lumiposa 625 FS (Wirkstoff Chlorantraniliprole) im Betrachtungszeitraum 2017–2019 ein. Der Einsatz der Beize ist von 2017–2019 angestiegen und variiert zwischen den Betrieben. Die aktuelle Zulassung der insektiziden Beize Lumiposa 625 FS in Deutschland wird vermutlich zum stärkeren Einsatz führen.
Exponentiation conversion circuit capable of changing the power exponent to any value
Authors: Arai Masahiro , Sano Yuji 
Published: July 2021

AbstractWe proposed an exponentiation conversion circuit which can change its power exponent to any value to compensate the nonlinearity of electronic devices. The proposed circuit is a small scale circuit utilizing the exponential characteristic in the subthreshold operation of MOSFET. In the proposed circuit, the new exponential conversion circuit converts signal multiplied logarithmically transformed input signal by the power exponent value, thereby obtaining the exponential power raised power function characteristic. The proposed circuit is suitable to integrate on a microcomputer chip used for IoT. The performance of the circuit was evaluated by a prototype IC made by 0.6 μm CMOS process. In measured results, the exponential conversion characteristics as set were obtained, the exponent value was set to 0.50, 1.00 and 2.00. By using the cascode exponential conversion circuit, the signal dynamic range was expanded by 5.2 dB when the exponent value was set to 2.00.
On the correspondence between abstract dialectical frameworks and nonmonotonic conditional logics
Authors: Heyninck Jesse , Kern-Isberner Gabriele , Thimm Matthias , Skiba Kenneth 
Published: July 2021

AbstractThe exact relationship between formal argumentation and nonmonotonic logics is a research topic that keeps on eluding researchers despite recent intensified efforts. We contribute to a deeper understanding of this relation by investigating characterizations of abstract dialectical frameworks in conditional logics for nonmonotonic reasoning. We first show that in general, there is a gap between argumentation and conditional semantics when applying several intuitive translations, but then prove that this gap can be closed when focusing on specific classes of translations.
An open-source surface barrier discharge plasma pretreatment for reduced cracking of outdoor wood coatings
Authors: Dahle Sebastian , Pilko Megi , Žigon Jure , Zaplotnik Rok , Petrič Marko , Pavlič Matjaž 
Published: July 2021

AbstractThe development of a simple surface barrier discharge plasma device is presented to enable more widespread access to and utilization of plasma technology. The application of the plasma device was demonstrated for pretreatment of wood prior to application of protective coatings for outdoor usage. The coatings' overall performance was increased, showing a reduction or absence of cracking due to weathering on plasma-pretreated specimens. Moreover, after ten months of outdoor weathering, the plasma-pretreated specimens showed fewer infections with biotic factors and improved adhesion performance in cross-cut tests, while the surface gloss performed independently from plasma pretreatment. In contrast to that, plasma-pretreated specimens were slightly more prone to discoloration due to outdoor weathering, whereas the plasma pretreatment did not impact the initial color after coating application.
Graphic abstract
A corpus of Schlieren photography of speech production: potential methodology to study aerodynamics of labial, nasal and vocalic processes
Authors: Tomaschek Fabian , Arnold Denis , Sering Konstantin , Strauss Friedolin 
Published: July 2021

AbstractThis report presents a corpus of articulations recorded with Schlieren photography, a recording technique to visualize aeroflow dynamics for two purposes. First, as a means to investigate aerodynamic processes during speech production without any obstruction of the lips and the nose. Second, to provide material for lecturers of phonetics to illustrates these aerodynamic processes. Speech production was recorded with 10 kHz frame rate for statistical video analyses. Downsampled videos (500 Hz) were uplodad to a youtube channel for illustrative purposes. Preliminary analyses demonstrate potential in applying Schlieren photography in research.
Artificial intelligent system for multimedia services in smart home environments
Authors: Rego Albert , Ramírez Pedro Luis González , Jimenez Jose M. , Lloret Jaime 
Published: July 2021

AbstractInternet of Things (IoT) has introduced new applications and environments. Smart Home provides new ways of communication and service consumption. In addition, Artificial Intelligence (AI) and deep learning have improved different services and tasks by automatizing them. In this field, reinforcement learning (RL) provides an unsupervised way to learn from the environment. In this paper, a new intelligent system based on RL and deep learning is proposed for Smart Home environments to guarantee good levels of QoE, focused on multimedia services. This system is aimed to reduce the impact on user experience when the classifying system achieves a low accuracy. The experiments performed show that the deep learning model proposed achieves better accuracy than the KNN algorithm and that the RL system increases the QoE of the user up to 3.8 on a scale of 10.
Locally Recoverable Codes correcting many erasures over small fields
Authors: Ballico E. 
Published: July 2021

AbstractWe define linear codes which ares-Locally Recoverable Codes (ors-LRC), i.e. codes which are LRC insways, the case$$s=1$$s=1roughly corresponding to the classical case of LRC codes. We use them to describe codes which correct many erasures, although they have small minimum distance. Any letter of a received word may be corrected usingsdifferent local codes. We use the Segre embedding ofslocal codes and then a linear projection.
Time-dependent scour processes on granular beds at large scale
Authors: Palermo Michele , Bombardelli Fabián A. , Pagliara Stefano , Kuroiwa Julio 
Published: July 2021

AbstractA theoretical framework, based on the phenomenological theory of turbulence applied to scour-related processes due to plunging jets on cohesionless beds, is considered in this paper. More specifically, its predictive capability is assessed herein for large-scale domains, after it was developed for small scales elsewhere. The analysis focuses on both the time-evolution process and the equilibrium configuration for a wide range of hydraulic structures. After revisiting the theory for the temporal evolution of the scour processes, the scour for large-scale tests is investigated using unpublished experiments performed at Colorado State University by the last author. These tests confirm the existence of two stages in the scour hole development, namely the developing and developed phases. Thus, the scour dynamics at large scales is shown to be consistent with that at smaller scales. Then, the theory recently introduced by the first three authors is used to predict the time evolution of scour, corroborating that the very same equations, together with the same coefficients, provide successful predictions, regardless of scale and granulometric distribution. Finally, the theory is again verified against laboratory data on PK weirs obtained at the University of Pisa. Overall, the work described in the paper offers a tool with general validity.
Parenting among Settled Migrants from Southern Africa: A Qualitative Evidence Synthesis
Authors: Machaka Ruvimbo , Barley Ruth , Serrant Laura , Furness Penny , Dunham Margaret 
Published: July 2021

AbstractThe Global North has over the years been a popular destination for migrants from the Global South. Most of the migrants are in their reproductive ages who go on to bear and raise children. The differences and subjectivity in the context of their experiences may have an impact on how they ensure that their children have the best possible health and well-being. This paper synthesises 14 qualitative research papers, conducted in 6 Global North countries. We gathered evidence on settled Southern African migrants experiences of bearing and raising children in Global North destination countries and how they conceptualise sustaining children’s health and well-being. Results of the review indicated a concerning need for support in sustaining children’s health and well-being. Cultural and religious beliefs underpin how the parents in these studies raise their children. More research is needed which engages with fathers and extended family.
Household Debt, Maternal Well-Being, and Child Adjustment in Germany: Examining the Family Stress Model by Family Structure
Authors: Heintz-Martin Valerie , Recksiedler Claudia , Langmeyer Alexandra N. 
Published: July 2021

AbstractThe amount of household debt tripled globally over the last decades and a sizable share of individuals and families are overindebted due to mortgages, credit cards, or consumer debt. Yet research on the distribution of debt across families, and potential ripple effects of the psychological burden related to debt on well-being and family relations, remains sparse. Our study aims to fill these gaps by examining the socio-demographic profiles of families that have accumulated household debt and the unique role that the psychological burden related to debt plays on associations between mothers’ well-being, parental dynamics, and child adjustment based on the Family Stress Model (FSM). We used representative survey data collected in 2019 from Germany (N = 3271), which is one of the richest economies worldwide, yet about 10% of adults reported to be overindebted. Logistic regression results showed that single mothers were less likely to have debt compared to mothers in two-parent families. However, both single mothers and mothers in stepfamilies with high levels of perceived economic strain were particularly likely to report having debt. Structural equation modeling yielded that the links between the psychological burden of debt, maternal well-being, parental dynamics, and child adjustment were largely in line with the FSM, except for single mothers. We conclude that persisting financial disparities by family structure may be partially fostered by unique characteristics of the German welfare state, such as promoting more a traditional two-parent norm, and discuss our findings in light of practical implications.
Interactions of BRCA1-mutated Breast Cancer Cell Lines with Adipose-derived Stromal Cells (ADSCs)
Authors: Plangger Adelina , Haslik Werner , Rath Barbara , Neumayer Christoph , Hamilton Gerhard 
Published: July 2021

AbstractLipofilling may constitute a technique to assist reconstruction of breasts following prophylactic mastectomy for patients with mutated BRCA1 or BRCA2 genes. However, to date it is not clear whether adipose-derived stromal cells (ADSCs) increase the risk of tumor initiation and progression in this situation. Therefore, the interactions of BRCA1 mutated breast cancer cell lines with normal ADSCs were investigated in the present study. Characteristics of MDA-MB-436 (BRCA1 c.5277 + 1G > A) and HCC1937 (BRCA1 p.Gln1756.Profs*74) were compared to MDA-MB-231 and T47D BRCA1/2 wild-type breast cancer cell lines. ADSCs were cultivated from lipoaspirates of a panel of BRCA1/2- wildtype patients. Interactions of conditioned medium (CM) of these cells with the breast cancer lines were studied using proliferation and migration assays as well as adipokine expression western blot arrays. CM of ADSCs exhibit a dose-dependent stimulation of the proliferation of the breast cancer cell lines. However, of the ADSC preparations tested, only 1 out of 18 samples showed a significant higher stimulation of BRCA1-mutated MDA-MB-436 versus wildtype MDA-MB-231 cells, and all CM revealed lower stimulatory activity for BRCA1-mutated HCC1937 versus wildtype T47D cells. Additionally, migration of breast cancer cells in response to CM of ADSCs proved to be equivalent or slower for BRCA1/2 mutated versus nonmutated cancer cells and, with exception of angiopoietin-like 2, induced expression of adipokines showed no major difference. Effects of media conditioned by normal ADSCs showed largely comparable effects on BRCA1-mutated and wildtype breast cancer cell lines thus advocating lipofilling, preferentially employing allogeneic non-mutated ADSCs.
Nonlinear reduced-order model for vertical sloshing by employing neural networks
Authors: Pizzoli Marco , Saltari Francesco , Mastroddi Franco , Martinez-Carrascal Jon , González-Gutiérrez Leo M. 
Published: July 2021

AbstractThe aim of this work is to provide a reduced-order model to describe the dissipative behavior of nonlinear vertical sloshing involving Rayleigh–Taylor instability by means of a feed forward neural network. A 1-degree-of-freedom system is taken into account as representative of fluid–structure interaction problem. Sloshing has been replaced by an equivalent mechanical model, namely a boxed-in bouncing ball with parameters suitably tuned with performed experiments. A large data set, consisting of a long simulation of the bouncing ball model with pseudo-periodic motion of the boundary condition spanning different values of oscillation amplitude and frequency, is used to train the neural network. The obtained neural network model has been included in a Simulink® environment for closed-loop fluid–structure interaction simulations showing promising performances for perspective integration in complex structural system.