bluuebunny/crossref_metadata_2025_split huggingface dataset:
Prediction of Thermodynamic Properties of Fluids at Extreme Conditions: Assessment of the Consistency of Molecular-Based Models
Authors: Staubach J. , Stephan S. 
Published: July 2023

AbstractFor machining processes, such as drilling, grinding, and cutting, fluids play a crucial role for lubrication and cooling. For adequately describing such processes, robust models for the thermophysical properties of the fluids are a prerequisite. In the contact zone, extreme conditions prevail, e.g. regarding temperature and pressure. As thermophysical property data at such conditions are presently often not available, predictive and physical models are required. Molecular-based equations of state (EOS) are attractive candidates as they provide a favorable trade-off between computational speed and predictive capabilities. Yet, without experimental data, it is not trivial to assess the physical reliability of a given EOS model. In this work, Brown’s characteristic curves are used to assess molecular-based fluid models. Brown’s characteristic curves provide general limits that are to be satisfied such that a given model is thermodynamically consistent. Moreover, a novel approach was developed, which uses pseudo-experimental data obtained from molecular simulations using high-accurate force fields. The method is generalized in a way that it can be applied to different force field types, e.g. model potentials and complex real substances. The method was validated based on the (scarcely) available data in the literature. Based on this pseudo-experimental data, different thermodynamic EOS models were assessed. Only the SAFT-VR Mie EOS is found to yield thermodynamically consistent results in all cases. Thereby, robust EOS models were identified that can be used for reliably modeling cutting fluids at extreme conditions, e.g. in machining processes.
Physical Modeling of Grinding Forces
Authors: Kästner F. , de Payrebrune K. M. 
Published: July 2023

AbstractIn order to address the increasing demands on precision in manufacturing, the prediction of various processes by model-based methods is increasingly becoming a key technology. With respect to this, the grinding process still reveals a lot of potential in terms of reliable predictions. In order to exploit this potential and to improve the understanding of the process itself, a physical force model is developed. Here, process-typical influencing factors, as well as commonly used cooling lubricants, are considered. In addition to the simulative effort for the actual model, basic experimental investigations have to be carried out. In single scratch tests, it has been found that process and deformation mechanisms such as rubbing, ploughing, and cutting of the material and also the pile-up of this material on both sides of the cutting grain are significantly involved in the development of forces. It also turned out that the resulting forces are greater when cooling lubricants are used and that the topographic characteristics of a scratch are also affected by them. For a realistic mapping of these effects within the force model, the deformation model, according to Johnson and Cook, and a discretization, according to Arbitrary Lagrangian-Eulerian, proved most suitable. For integrating the cooling lubricants, the Reynolds equation using a subroutine proves to be a suitable instrument. The challenge to complete the force model is combining the scratch and the Reynolds equation simulation.
Modeling and Implementation of a 5G-Enabled Digital Twin of a Machine Tool Based on Physics Simulation
Authors: Mertes J. , Glatt M. , Yi L. , Klar M. , Ravani B. , Aurich J. C. 
Published: July 2023

AbstractThe cellular network standard 5G meets the networking requirements for different industrial use cases due to the advantages of low latency, high bandwidth, and high device density while providing a very good quality of service. These capabilities enable the realization of wireless digital twins (DTs), a key element of future cyber-physical production systems. DTs for prediction, monitoring, and control of machine tools need physical modeling as well as the bidirectional exchange of information between the digital and the physical world. 5G is a wireless communication technology with the potential to disruptively change industrial communication. 5G enables wireless, highly scalable, and flexible realization of even safety- and latency-critical connections. In this paper, a 5G enabled DT of a machine tool for process control, monitoring and simulation is developed and implemented. A bidirectional communication between the physical machine tool and the DT is realized via 5G. Moreover, process prediction is enabled based on physics simulation. Next to the physical modeling of the machine behavior, a 5G-capable interface between the input and output signals of the machine control system and the developed DT is implemented. Moreover, the DT is migrated in a wireless form to an edge server. Furthermore, the capabilities of the DT are demonstrated. Therefore, the architecture and implementation of the DT as well as its benefits and challenges are outlined.
A Human-Centered Framework for Scalable Extended Reality Spaces
Authors: Memmesheimer V. M. , Ebert A. 
Published: July 2023

AbstractMixed and Virtual Reality technologies have been assigned considerable potential to support training and workflows in various domains. However, available solutions are subject to scalability limitations which evoke temporal and cognitive efforts that outweigh the technology’s intrinsic potential and prevent their application in profit-making, real-world settings. Addressing these issues, we developed a framework for Scalable Extended Reality (XRS) spaces following a human-centered design process. To this end, we derived abstract high-level use cases which exploit key benefits of Mixed and Virtual Reality technologies and can be combined with each other to describe specific low-level use cases in many domains. Based on the defined high-level use cases, i.e., design and development of physical items, training, teleoperation, co-located and distributed collaboration, we specified functional and non-functional requirements and developed a framework design solution that implements multidimensional scalability enhancements: Multiple on-site and off-site users can access the XRS space through customized Mixed or Virtual Reality interfaces and then reference or manipulate real or virtual scene components. Thereby, full scalability regarding options of interaction is provided through the integration of a robotic system that allows off-site users to manipulate real scene components on site. Eventually, the framework’s applicability to different use cases is demonstrated in theoretical walkthroughs.
Simulation-Based Investigation of the Distortion of Milled Thin-Walled Aluminum Structural Parts Due to Residual Stresses
Authors: Weber D. , Kirsch B. , D‘Elia C. R. , Linke B. S. , Hill M. R. , Aurich J. C. 
Published: July 2023

AbstractNowadays, aluminum components in aircraft are mainly found in the form of thin-walled monolithic structural parts of the internal fuselage and the wings as spars and ribs [1]. This is because these components have excellent material properties for lightweight applications, such as a high strength-to-weight ratio and good corrosion resistance [2]. A typical manufacturing process to produce such structural components is milling. For these weight-optimized, monolithic components, up to 95% of the material is removed by machining [3]. The challenge with these thin-walled structural components, which are up to 14 m long, is that part distortion can occur because of the manufacturing-specific process chain [4]. Residual stresses due to machining and upstream processes such as forming, and heat-treatments are known to be the key factor for causing those distortions [5].In this research the effect of the residual stresses, the machining strategy, the part topology and the geometry, including the wall-thickness, on distortion were investigated experimentally, and simulatively by validated virtual models based on the finite-element method. Those models can then be used to predict the distortion. At the end distortion minimization techniques were derived.
Evaluation des Nutzens
Authors: Schlander Michael , Schäfer Ramon , Selberg Lorenz 
Published: July 2023

ZusammenfassungFür jede der anhand der von ihnen verursachten Krankheitslast ausgewählten Krankheitsgruppen wird anhand mindestens eines Testverfahrens die Datenlage zum patientenbezogenen und gesellschaftlichen Nutzen der Laboratoriumsmedizin evaluiert. Der Beitrag der modernen Labormedizin erweist sich dabei in allen untersuchten Krankheitsgruppen als medizinisch „nutzenstiftend“ und vielfach sogar als unverzichtbar. Beispielhaft zu nennen sind der Einsatz prädiktiver Biomarker als Voraussetzung einer gezielten Krebstherapie, von Tests auf Anti-CCP-Antikörper beziehungsweise hochsensitives kardiales Troponin zur frühen Diagnose der rheumatoiden Arthritis bzw. des akuten Herzinfarkts, aber auch TSH-Tests für eine adäquate kausale Therapie von depressiven Störungen auf dem Boden einer Hypothyreose und therapeutisches Drug-Monitoring in der Neuropsychiatrie und darüber hinaus; schliesslich Erregerdiagnostik und Resistenzbestimmungen in der Infektiologie. Die untersuchten Tests erweisen sich zudem durchweg als kosteneffektiv.
I. Kapitel: Theoretische Voraussetzungen
Authors: Aumüller Matthias 
Published: July 2023

ZusammenfassungDie Theorie des unzuverlässigen Erzählens ist seit mehr als zwanzig Jahren einer der produktivsten Bereiche der Narratologie. Die Folge ist eine inzwischen kaum mehr zu überschauende Anzahl von Publikationen zu dem Thema. Ziel des vorliegenden Kapitels ist, eine schlanke, anwendungsorientierte Variante der Theorie des unzuverlässigen Erzählens vorzustellen, damit das eigentliche Ziel dieses Buchs erreicht werden kann: durch Einzelanalysen die Bedeutung aufzudecken, die das Verfahren des unzuverlässigen Erzählens für deutschsprachige Nachkriegsromane hat.
X. Kapitel: Der Schluss als Auftakt – Unzuverlässiges Erzählen in der Literatur der DDR
Authors: Aumüller Matthias 
Published: July 2023

ZusammenfassungAm Schluss ist es vielleicht erlaubt, etwas zur Genese dieses Buches zu sagen. Ursprünglich geplant war eine spezielle, selektive Literaturgeschichte der DDR: nämlich anhand des unzuverlässigen Erzählens. Bis auf einige Ausnahmen galt und gilt die Erzählliteratur der DDR als konformistisch und uninteressant.
III. Kapitel: Abseits der Gruppe 47 – Unzuverlässigkeit und instabile Welten
Authors: Aumüller Matthias 
Published: July 2023

ZusammenfassungDie Autoren, deren Werke Gegenstand dieses Kapitels sind, scheinen auf den ersten Blick nicht viel miteinander gemein zu haben – bis auf die Tatsache, dass sie alle der Gruppe 47 fernstanden. Sie alle gelten als Einzelgänger oder hielten sich dafür. Warum sie hier durch die Kapitelanlage zusammengefasst werden, hat jedoch andere Gründe.
VII. Kapitel: Unzuverlässiges Erzählen in Romanen der Gruppe 47
Authors: Aumüller Matthias 
Published: July 2023

ZusammenfassungÜber die Gruppe 47 ist viel geschrieben worden und wird noch viel geschrieben. Vor allem unter literatursoziologischen Gesichtspunkten ist sie ein interessantes Phänomen. Da sie, alles in allem, aber auch ein fluides Phänomen ist und die Werke, die ihre Mitglieder hervorgebracht haben, ziemlich heterogen sind, lassen sich in poetologischer oder narratologischer Hinsicht keine aussagekräftigen Verallgemeinerungen machen.
Radiodiagnostics of standard orthodontic radiographs—dental and extradental incidental findings
Authors: Wiechens Bernhard , Klenke Daniela , Quast Anja , Santander Petra , Skorna Ida , Meyer-Marcotty Philipp 
Published: July 2023

Abstract
Objectives
The extent of undetected incidental findings in routine orthodontic radiographs is still unknown. However, incidental findings that are not in the primary focus of orthodontic diagnostics may be of high medical relevance. Therefore, this study aimed to analyse whether incidental findings are reliably detected and which parameters influence the orthodontist’s assessment.

Methods
In a clinical cross-sectional study 134 orthodontists evaluated two orthopantomogram (OPT) and two lateral cephalogram (LC) radiographs each via a standardised online survey. The radiographs were previously examined by three dentists and one radiologist—in a pilot phase—regarding the number of incidental findings and subsequently defining as gold standard in a consensus procedure. The radiographs were presented consecutively, the number of incidental findings detected were noted and the individual findings could be described in free text form.

Results
Overall, 39.1% of the incidental findings were detected. The orthodontists’ focus was primarily on the dental region. Here, 57.9% of incidental findings were detected, while 20.3% were detected in extradental regions (p < 0.001). A highly relevant finding of suspected arteriosclerotic plaque was detected in 7.5% of cases (OPT). Significantly more incidental findings were detected on OPTs than on LCs (OPT 42.1%, LC 36.0%, p < 0.001). As participants’ length of professional experience increased, significantly more time was spent on the assessment (p < 0.001), correlating positively with the detection of incidental findings.

Conclusions
Even in daily routine practice, attention must be paid to a thorough assessment of all radiographed regions. The factors time and professional experience can prevent practitioners from overlooking findings outside the orthodontic focus.
Social group connections support mental health following wildfire
Authors: Cruwys Tegan , Macleod Emily , Heffernan Timothy , Walker Iain , Stanley Samantha K. , Kurz Tim , Greenwood Lisa-Marie , Evans Olivia , Calear Alison L. 
Published: July 2023

Abstract
Purpose
As environmental disasters become more common and severe due to climate change, there is a growing need for strategies to bolster recovery that are proactive, cost-effective, and which mobilise community resources.

Aims
We propose that building social group connections is a particularly promising strategy for supporting mental health in communities affected by environmental disasters.

Methods
We tested the social identity model of identity change in a disaster context among 627 people substantially affected by the 2019–2020 Australian fires.

Results
We found high levels of post-traumatic stress, strongly related to severity of disaster exposure, but also evidence of psychological resilience. Distress and resilience were weakly positively correlated. Having stronger social group connections pre-disaster was associated with less distress and more resilience 12–18 months after the disaster, via three pathways: greater social identification with the disaster-affected community, greater continuity of social group ties, and greater formation of new social group ties. New group ties were a mixed blessing, positively predicting both resilience and distress.

Conclusions
We conclude that investment in social resources is key to supporting mental health outcomes, not just reactively in the aftermath of disasters, but also proactively in communities most at risk.
Surgical treatment of high‐grade acute intramuscular hamstring tendon injuries in athletes leads to predictable return to sports and no re‐injuries
Authors: Aujla Randeep S. , Cecchi Steven , Koh Eamon , D’Alessandro Peter , Annear Peter 
Published: July 2023

AbstractPurposeThe purpose of this study was to assess the post‐operative return to sport and re‐injury rates following surgical repair of acute, first‐time, high‐grade intramuscular hamstring tendon injuries in high level athletes.MethodsPatients were identified using the databases of two sports surgeons. Once patients were identified their clinical notes and imaging were reviewed to confirm that all patients had injuries to the intramuscular portion of the distal aspect of the proximal biceps femoris tendon. All imaging was reviewed by an experienced musculoskeletal radiologist to confirm diagnosis. Surgery for such injuries was indicated in high‐level athletes presenting with acute hamstring injuries. All patients were operated on within 4 weeks. Outcomes included Tegner scores, return to sport, Lower Extremity Functional Score (LEFS), current hamstring symptoms and complications including re‐injury.ResultsEleven injuries (10 patients) were included in the study. All patients were male and Australian Rules Football players. Six patients were professional athletes and 4 semi‐professional athletes. Median age was 24.5 (range 21–29) and median follow‐up period was 33.7 months (range; 16–65). 91% were British Athletic Muscle Injury Classification (BAMIC) 3c and 9% were BAMIC 4c. 91% were classed as MR2 and 9% as MR3 on the simplified four‐grade injury classification. Athletes achieved return to play (RTP) at an average of 3.1 months (SD 1.0) post repair. All but one patient achieved a Tegner score equal to pre‐injury levels. Maximum LEFS was achieved by all patients. Minor pain scores (all with VAS < 1/10) on sciatic and functional stretch were recorded in 36% and 27% of patients respectively, with subtle neural symptoms (9%) and subjective tightness (36%) also noted. There were no surgical complications in our patient cohort. No patients had a re‐injury or re‐operation.ConclusionsSurgical repair of high‐grade intramuscular tendon injuries of the biceps femoris hamstring muscle in athletes resulted in high levels of return to pre‐injury sporting levels and no re‐injuries. The intra‐muscular tendon should be scrutinized when assessing hamstring injuries in elite sport and offer surgery in high‐grade cases.Level of evidenceIV.
Asymptotics and sign patterns for coefficients in expansions of Habiro elements
Authors: Goswami Ankush , Jha Abhash Kumar , Kim Byungchan , Osburn Robert 
Published: July 2023

AbstractWe prove asymptotics and study sign patterns for coefficients in expansions of elements in the Habiro ring which satisfy a strange identity. As an application, we prove asymptotics and discuss positivity for the generalized Fishburn numbers which arise from the Kontsevich–Zagier series associated to the colored Jones polynomial for a family of torus knots. This extends Zagier’s result on asymptotics for the Fishburn numbers.
Patterns of fish occupancy of artificial habitats in the eastern Mediterranean shallow littoral
Authors: Ntouni Maria-Myrto , Lazaris Alexis , Tzanatos Evangelos 
Published: July 2023

AbstractCoastal ecosystems act as spawning grounds, settlement areas or nurseries for a diversity of fish species. Today, these ecosystems are under various anthropogenic stressors. One of these disturbances is the structural modification of the shallow littoral by coastal infrastructure such as ports, piers, marinas and roads. Here, we investigate whether there are differences between modified (artificial) and non-modified (natural) habitats in central Greece in terms of the fish assemblage structure, species diversity and richness, fish abundance and the proportion of juveniles. We carried out underwater visual census from September 2020 to August 2021 across two habitats (natural and artificial) in three locations of central Greece. The fish community and Shannon diversity index did not vary across habitat type; however, both species richness and total abundance were significantly higher in artificial habitats. The abundance of five (out of ten examined in total) taxa was significantly affected by habitat type. Higher abundance in the artificial habitat in the warmer or more productive months was found, possibly relevant to food availability. The significance of habitat interactions with location and the temporal component in community composition and species abundance models indicated intense heterogeneity in species-specific occupancy and may be linked to the type and characteristics of artificial habitats. Modeling of the percentage of small-sized individuals indicated patterns of juvenile occupancy requiring further investigation about the potential role of artificial habitats for some species. Future research should examine the impact of specific artificial habitat types on population dynamics and investigate the implications of artificial habitat construction for conserving fish diversity and maintaining coastal ecosystem functioning.
Improved survival of autologous stem cell transplantation in primary refractory and relapsed Hodgkin lymphoma in the brentuximab vedotin era — real-world data from Hungary
Authors: Husi Kata , Szabó Roxána , Pinczés László Imre , Földeák Dóra , Dudley Réka , Szomor Árpád , Koller Beáta , Gopcsa László , Illés Árpád , Miltényi Zsófia 
Published: July 2023

AbstractAutologous stem cell transplantation (ASCT) is the standard treatment of primary refractory or relapsed Hodgkin-lymphoma, which can provide a cure rate of about 50%. The aim of our study was to analyze the data of 126 HL patients undergoing AHSCT in Hungary between 01/01/2016 and 31/12/2020. We assessed the progression-free and overall survival, the prognostic role of PET/CT performed before transplantation and effect of brentuximab vedotin (BV) treatment on survival outcomes. The median follow-up time from AHSCT was 39 (1–76) months. The 5-year OS comparing PET- and PET + patients was 90% v. 74% (p = 0.039), and 5-year PFS was 74% v. 40% (p = 0.001). There was no difference in either OS or PFS compared to those who did not receive BV before AHSCT. We compared BV treatments based on their indication (BV only after AHSCT as maintenance therapy, BV before and after AHSCT as maintenance treatment, BV only before AHSCT, no BV treatment). There was statistically significant difference in the 5-year PFS based on the inication of BV therapy. Recovery rates of our R/R HL patient population, who underwent AHSCT, improved significantly. Our positive results can be attributed to the PET/CT directed, response-adapted treatment approach, and the widespread use of BV.
Clavicle fixation to reduce short-term analgesia and improve respiratory function in patients with chest wall injuries
Authors: Franco Helena , Williamson Frances , Manzanero Silvia , Schuetz Michael 
Published: July 2023

Abstract
Introduction
The objective of this study was to determine if operative fixation of clavicle fractures in patients with non-operatively treated ipsilateral rib fractures is associated with a lower overall analgesic requirement and improved respiratory function.

Materials and methods
A retrospective matched cohort study was conducted involving patients admitted to a single tertiary trauma centre having sustained a clavicle fracture with ipsilateral rib fracture/s between January 2014 and June 2020. Patients were excluded if brain, abdominal, pelvic, or lower limb trauma was identified. 31 patients with operative clavicle fixation (study group) were matched 1:1 to 31 patients with non-operative management of the clavicle fracture (control group) based on age, sex, number of rib fractures and injury severity score. The primary outcome was the number of analgesic types used, and the secondary outcome was respiratory function.

Results
The study group required a mean of 3.50 types of analgesia prior to surgery which decreased to 1.57 post-surgery. The control group required 2.92 types of analgesia, reducing to 1.65 after the date of surgery in the study group. A General Linear Mixed Model indicated that the intervention (operative vs. non-operative management) had statistically significant effects on the number of required analgesic types (p < 0.001, $$\eta_{{\text{p}}}^{2}$$

η

p

2

= 0.365), oxygen saturation (p = 0.001, $$\eta_{{\text{p}}}^{2}$$

η

p

2

= 0.341, 95% CI 0.153–0.529) and temporal decline in daily supplemental oxygen requirement (p < 0.001, $$\eta_{{\text{p}}}^{2}$$

η

p

2

= 0.626, 95% CI 0.455–0.756).

Conclusion
This study supported the hypothesis that operative clavicle fixation reduces short-term in-patient analgesia use and improves respiratory parameters in patients with ipsilateral rib fractures.

Level of evidence
Level III therapeutic study.