bluuebunny/crossref_metadata_2025_split huggingface dataset:
RG flows and fixed points of O(N)r models
Authors: Jepsen Christian , Oz Yaron 
Published: February 2024

AbstractBy means ofϵand largeNexpansions, we study generalizations of theO(N) model where the fundamental fields are tensors of rankrrather than vectors, and where the global symmetry (up to additional discrete symmetries and quotients) isO(N)r, focusing on the casesr≤ 5. Owing to the distinct ways of performing index contractions, these theories contain multiple quartic operators, which mix under the RG flow. At all largeNfixed points, melonic operators are absent and the leading Feynman diagrams are bubble diagrams, so that all perturbative fixed points can be readily matched to full largeNsolutions obtained from Hubbard-Stratonovich transformations. The family of fixed points we uncover extend to arbitrary higher values ofr, and as their number grows superexponentially withr, these theories offer a vast generalization of the criticalO(N) model.We also study sexticO(N)rtheories, whose largeNlimits are obscured by the fact that the dominant Feynman diagrams are not restricted to melonic or bubble diagrams. For these theories the largeNdynamics differ qualitatively across different values ofr, and we demonstrate that the RG flows possess a numerous and diverse set of perturbative fixed points beginning at rank four.
On the degrees of freedom of R2 gravity in flat spacetime
Authors: Hell Anamaria , Lüst Dieter , Zoupanos George 
Published: February 2024

Abstract
We study the degrees of freedom of R2 gravity in flat spacetime with two approaches. By rewriting the theory a la Stueckelberg, and implementing Lorentz-like gauges to the metric perturbations, we confirm that the pure theory propagates one scalar degree of freedom, while the full theory contains two tensor modes in addition. We then consider the degrees of freedom by directly examining the metric perturbations. We show that the degrees of freedom of the full theory match with those obtained with the manifestly covariant approach. In contrast, we find that the pure R2 gravity has no degrees of freedom. We show that a similar discrepancy between the two approaches appears also in a theory dual to the three-form, and appears due to the Lorentz-like gauges, which lead to the fictitious modes even after the residual gauge redundancy has been taken into account. At first sight, this implies a discontinuity between the full theory and the pure case. By studying the first-order corrections of the full R2 gravity beyond the linear regime, we show that at high-energies, both scalar and tensor degrees of freedom become strongly coupled. This implies that the apparent discontinuity of pure and full R2 gravity is just an artefact of the perturbation theory, and further supports the absence of degrees of freedom in the pure R2 gravity.
Large N master field optimization: the quantum mechanics of two Yang-Mills coupled matrices
Authors: Mathaba Kagiso , Mulokwe Mbavhalelo , Rodrigues João P. 
Published: February 2024

Abstract
We study the large N dynamics of two massless Yang-Mills coupled matrix quantum mechanics, by minimization of a loop truncated Jevicki-Sakita effective collective field Hamiltonian. The loop space constraints are handled by the use of master variables. The method is successfully applied directly in the massless limit for a range of values of the Yang-Mills coupling constant, and the scaling behaviour of different physical quantities derived from their dimensions are obtained with a high level of precision. We consider both planar properties of the theory, such as the large N ground state energy and multi-matrix correlator expectation values, and also the spectrum of the theory. For the spectrum, we establish that the U(N) traced fundamental constituents remain massless and decoupled from other states, and that bound states develop well defined mass gaps, with the mass of the two degenerate lowest lying bound states being determined with a particularly high degree of accuracy. In order to confirm, numerically, the physical interpretation of the spectrum properties of the U(N) traced constituents, we add masses to the system and show that, indeed, the U(N) traced fundamental constituents retain their “bare masses”. For this system, we draw comparisons with planar results available in the literature.
Matrix model correlators from non-Abelian T-dual of AdS5 × S5
Authors: Roychowdhury Dibakar 
Published: February 2024

Abstract
We study various perturbations and their holographic interpretation for non-Abelian T-dual of AdS5 × S5 where the T-duality is applied along the SU(2) of AdS5. This paper focuses on two types of perturbations, namely the scalar and the vector fields on NATD of AdS5 × S5. For scalar perturbations, the corresponding solutions could be categorised into two classes. For one of these classes of solutions, we build up the associated holographic dictionary where the asymptotic radial mode sources scalar operators for the (0 + 1)d matrix model. These scalar operators correspond to either a marginal or an irrelevant deformation of the dual matrix model at strong coupling. We calculate the two point correlation between these scalar operators and explore their high as well as low frequency behaviour. We also discuss the completion of these geometries by setting an upper cut-off along the holographic axis and discuss the corresponding corrections to the scalar correlators in the dual matrix model. Finally, we extend our results for vector perturbations where we obtain asymptotic solutions for a particular class of modes. These are further used to calculate the boundary charge density at finite chemical potential.
Ärztliche Gesprächsführung und psychologische Beratung bei Endometriose
Authors: Wischmann Tewes , Ditzen Beate 
Published: February 2024

ZusammenfassungDie Tatsache, dass Endometriose eine der häufigsten Unterleibserkrankungen bei Frauen und Mädchen ist, gerät immer mehr in den Blickpunkt der Öffentlichkeit und der Politik. Auch in der Praxis der niedergelassenen Frauenärztinnen und Frauenärzte in Deutschland bekommt diese Erkrankung einen größeren Stellenwert, es fehlt aber noch an „Werkzeugen“ zur Gesprächsführung und psychologischen Beratung bei Endometriose. Im Beitrag werden konkrete Hinweise für die ärztliche Beratung und Fragenbeispiele dazu gegeben sowie praxisnahe Tipps mit Formulierungsbeispielen für Betroffene von Endometriose (und deren Partner*innen). Diese praktischen Empfehlungen können dazu beitragen, die Beziehung zwischen Arzt und Patientin im Falle einer Endometriose zu verbessern. Die genannten Ressourcen (Ratgeberbücher, Internetseiten) fokussieren ausschließlich auf deutschsprachige Angebote.
Space efficiency and throughput performance in AVS/RS under variant lane depths
Authors: Lupi Giacomo , Accorsi Riccardo , Battarra Ilaria , Manzini Riccardo , Sirri Gabriele 
Published: February 2024

AbstractAn automated vehicle storage and retrieval system (AVS/RS) is a widespread automated warehouse solution that hosts hundreds of stock-keeping units (SKU) and counts thousands of incoming and outgoing unit loads corresponding to a sequence of time-dependent storage and retrieval transactions. AVS/RS ensures high storage density, reduced cycle time, and high productivity. This study introduces and applies an original data-driven comparative and competitive multi-scenario methodology to measure and control the performance of a multi-deep tier-captive AVS/RS. This original methodology measures and controls the impact of lane depth (1), assignment strategy (2), opening strategy (3), and dispatching strategy (4) on the storage capacity, system throughput, and space efficiency in the design and configuration of an AVS/RS. The proposed methodology was applied to a real case study, demonstrating that the combination of the four leverages significantly affects system performance.
Laser marking on polyoxymethylene (POM) polymer substrate for a lean manufacturing application
Authors: Ofoegbu Stanley Udochukwu , Rosa Paulo J. A. , Fernandes Fábio A. O. , Pereira António B. , Fonseca Pedro 
Published: February 2024

Abstract
Laser marking is a critical production process step in most automated production systems. However, some materials such as polyoxymethylene (POM) can be quite challenging to laser to 80 kHz.mark, hence the need to develop new laser marking methods. By employing a wide range of marking parameters (marking speed 15–2000 mm/s, laser power from 10 to 100% of 30 W maximum, and frequencies mainly from 1 to 400 kHz) and characterization techniques, and with the use of marker inks as masking agents successful laser marking POM is demonstrated irrespective of its presentation (white or black coloured) using a new method akin to Laser Polymer Tattooing (LPT), and without prior modification of polymer composition (by addition of laser marking additives). Results indicate laser marking of acceptable quality can be obtained with black POM at marking speeds up to 2000 mm/s. For white POM, markings of acceptable quality were obtained at markings speeds up to 100 mm/s, with laser power ≥ 80% (of 30 W maximum), and with frequencies in the range of 20 kHz with the help of a masking agent. The effects of the laser marking parameters on marking quality and the changes induced in the material are presented and discussed. The wide range of marking parameters employed enabled the determination of feasible marking parameters for the development of a lean manufacturing-based automatic and self-evaluating and improving laser marking system with minimal human intervention.
Translation and validation of the Hirschsprung and anorectal malformation quality of life (HAQL) questionnaire in a Danish Hirschsprung population
Authors: Gosvig Kristina , Jensen Signe Steenstrup , Sjölander Hannes , Hansen Nina Højer , Möller Sören , Qvist Niels , Ellebæk Mark Bremholm 
Published: February 2024

Abstract
Background
Hirschsprung’s disease (HD) may result in an impaired quality of life (QoL) due to bowel problems, postoperative complications and other health-related issues. The Hirschsprung and Anorectal Malformation Quality of Life (HAQL) questionnaire is a disease-specific instrument developed in the Netherlands to measure the QoL in patients with HD and anorectal malformations. The aim of this study was to translate, culturally adapt and validate HAQL in a Danish Hirschsprung population.

Material and methods
Translation and cultural adaptation were performed according to international guidelines. Invitations to participate in the validation were sent to 401 patients operated for HD during the period from 1985 to 2012. A total of 156 patients completed the translated and culturally adapted Danish versions of HAQL and 35 parents of children and adolescents completed the corresponding parent questionnaire. Reliability was evaluated in terms of internal consistency using Cronbach’s α and test–retest reliability using Intraclass Correlation Coefficient for the retest step. Known groups comparison was performed with comparison of mild HD (defined as recto-sigmoidal HD) and serious HD (defined as more proximal disease).

Results
The internal consistency of the dimensions was overall satisfactory for adults and adolescents but more problematic for children, where Cronbach’s α was less than 0.7 in 60% of the dimensions. For both children and adolescents, the α-value was unsatisfactory for social functioning, emotional functioning, and body image. The test–retest reliability was overall good. The known groups comparison was only able to demonstrate a significant difference between mild and severe HD within one dimension.

Conclusions
The translated version of the HAQL questionnaires provides an overall reliable instrument for evaluating disease-specific QoL in a Danish HD population, but it is important to acknowledge the limitations of the questionnaire, especially in children and adolescents.
Instructed speed and accuracy affect binding
Authors: Selimi Silvia , Moeller Birte 
Published: February 2024

AbstractIn the past few decades, binding and retrieval mechanisms have gained increased interest in research on human action control. Recent studies show that these mechanisms also play a role in the control of multiple independent actions. Here, two or more successively executed responses seem to be bound to each other so that repeating one of them can retrieve the other, affecting performance in this second response and resulting in so-called response–response binding effects. Binding effects are typically found in the response time data and, somewhat less reliably, also in the error rates. Whether binding effects show in the response times, the error rates, or both, is likely influenced by the current speed–accuracy settings of the participants, with binding effects more likely showing in error rates under a speed setting, while more likely showing in RTs under an accuracy setting. Alternatively, different speed–accuracy settings might also entail changes in executive control, affecting the size of observed binding effects. In this study, we tested these assumptions by comparing binding effects under different speed–accuracy settings that were induced via instructions focusing on speed, accuracy, or both (ambivalent). Binding effects were observed in response times independent of instructions, while in error rates, they only showed under speed or ambivalent instructions. These findings indicate that binding effects can be affected by instructions regarding speed and accuracy.
Sozial-ökologische Systeme im Wandel: Landnutzungsvisionen im Kilombero Tal, Tansania
Authors: Höllermann Britta 
Published: February 2024

ZusammenfassungDas Kilombero Tal in Tansania ist eines der größten saisonalen Feuchtgebiete Ostafrikas mit großem landwirtschaftlichem Potenzial. Aktuell dominiert der kleinbäuerliche Regenfeld-Reisanbau, es gibt jedoch schon seit Mitte des 20. Jahrhunderts noch nicht umgesetzte Pläne zur Intensivierung der Landwirtschaft. Angesichts sich verändernder hydro-klimatischer Risiken und zunehmender sozioökonomischer Dynamiken stellt sich die Frage nach der Resilienz dieser Mensch-Umwelt-Interaktionen. Dabei geht es um eine nachhaltige Balance zwischen menschlichen Bedürfnissen und der Integrität der Ökosysteme. Eine sozial-ökologische Forschungsperspektive kann hierbei die Wechselwirkungen zwischen den sozialen und biophysikalischen Teilsystemen sowie das Handeln der in die Biosphäre eingebetteten Akteure in den Vordergrund rücken und die verschiedenen Teilsysteme auf verschiedenen räumlichen, zeitlichen und institutionellen Ebenen untersuchen. Die Auswirkungen von Landnutzungsvisionen auf bestehende Landnutzungsmuster und die Rolle der Umweltwahrnehmung werden untersucht, ebenso wie die Perspektiven unterschiedlicher Akteure und deren Einfluss auf Entscheidungs- und Handlungsspielräume. Der Beitrag diskutiert, wie Landnutzungsvisionen räumliche Realitäten schaffen und welche Anpassungsstrategien aus welchen Gründen gewählt werden.
Association of indications for mandibular third molar coronectomy and the Pell and Gregory and the Winter classification systems
Authors: Simons Rashida N. , Gonesh Mitchell S. , Tuk Jacco G. , de Lange Jan , Lindeboom Jerome A. 
Published: February 2024

Abstract
Purpose
The purpose of this study was to determine how the surgeon’s decision to perform a mandibular third molar coronectomy or surgical removal is associated with the impaction pattern as classified using Pell and Gregory or Winter’s system.

Methods
This observational, cross-sectional study was conducted on 813 mandibular third molars belonging to 565 patients. All patients were referred for removal of the mandibular third molar and had radiographic signs indicating a close relationship with the inferior alveolar nerve. Panoramic images were classified according to the impaction pattern.

Results
A coronectomy was performed on 492 (60.5%) mandibular third molars.
Most impacted mandibular third molars were class IIB with a mesioangular inclination. A significant association was found between the Pell and Gregory classification and the surgeon’s choice (p = 0.002). Winter’s classification was not significantly associated with surgeon choice (p = 0.425).

Conclusion
Mandibular third molar coronectomy is chosen more frequently than surgical removal if molars are class III and position B.

Trial registration number
Not applicable.
Personalized Pressure Conditions and Calibration for a Predictive Computational Model of Coronary and Myocardial Blood Flow
Authors: Montino Pelagi Giovanni , Baggiano Andrea , Regazzoni Francesco , Fusini Laura , Alì Marco , Pontone Gianluca , Valbusa Giovanni , Vergara Christian 
Published: February 2024

AbstractPredictive modeling of hyperemic coronary and myocardial blood flow (MBF) greatly supports diagnosis and prognostic stratification of patients suffering from coronary artery disease (CAD). In this work, we propose a novel strategy, using only readily available clinical data, to build personalized inlet conditions for coronary and MBF models and to achieve an effective calibration for their predictive application to real clinical cases. Experimental data are used to build personalized pressure waveforms at the aortic root, representative of the hyperemic state and adapted to surrogate the systolic contraction, to be used in computational fluid-dynamics analyses. Model calibration to simulate hyperemic flow is performed in a “blinded” way, not requiring any additional exam. Coronary and myocardial flow simulations are performed in eight patients with different clinical conditions to predict FFR and MBF. Realistic pressure waveforms are recovered for all the patients. Consistent pressure distribution, blood velocities in the large arteries, and distribution of MBF in the healthy myocardium are obtained. FFR results show great accuracy with a per-vessel sensitivity and specificity of 100% according to clinical threshold values. Mean MBF shows good agreement with values from stress-CTP, with lower values in patients with diagnosed perfusion defects. The proposed methodology allows us to quantitatively predict FFR and MBF, by the exclusive use of standard measures easily obtainable in a clinical context. This represents a fundamental step to avoid catheter-based exams and stress tests in CAD diagnosis.
Modeling and prediction of business success: a survey
Authors: Gangwani Divya , Zhu Xingquan 
Published: February 2024

AbstractBusinesses are the driving force behind economic systems and are the lifeblood of the community. A business shares striking similarity to a living organism, including birth, infancy, rising, prosperity, and falling. The success of a business is not only important to the owners, but is also critical to the regional/domestic economic system, or even the global economy. Recent years have witnessed many new emerging businesses with tremendous success, such as Google, Apple, Facebook etc., yet millions of businesses also fail or fade out within a rather short period of time. Finding patterns/factors connected to the business rise and fall remains a long lasting question puzzling many economists, entrepreneurs, and government officials. Recent advancement in artificial intelligence, especially machine learning, has lend researchers powers to use data to model and predict business success. However, due to data driven nature of all machine learning methods, existing approaches are rather domain-driven and ad-hoc in their design and validations. In this paper, we propose a systematic review of modeling and prediction of business success. We first outline a triangle framework to showcase three parities connected to the business: Investment-Business-Market (IBM). After that, we align features into three main categories, each of which is focused on modeling a business from a particular perspective, such as sales, management, innovation etc., and further summarize different types of machine learning and deep learning methods for business modeling and prediction. The survey provides a comprehensive review of computational approaches for business performance modeling and prediction.
Characterization of hybrid nanofibrils composed of xyloglucan and disintegrated bacterial cellulose
Authors: Tagawa Satomi , Tokuyasu Ken , Yamagishi Kenji , Ike Masakazu , Amano Yoshihiko , Mizuno Masahiro 
Published: February 2024

AbstractNata puree (NP)—obtained by disintegrating nata de coco (bacterial cellulose [BC]) using a household blender—can be combined with tamarind seed gum (TG) to generate NPTG. In this study, BC fibrils (BC-TG) were prepared by removing free TG from NPTG and characterized. BC-TG exhibited high water dispersibility and relatively long nanofibrils (> 20 μm). We examined the distribution of xyloglucan, the main component of TG, on BC nanofibrils using immunofluorescence staining with calcofluor white, which stains the hydrophilic cellulose surface, and found that xyloglucan was adsorbed at different sites along the fibers. This indicated that BC-TG was a composite nanofibril of xyloglucan and BC. Furthermore, BC-TG showed a higher degree of adsorption on hydrophobic plastic substrates than BC did, suggesting a change in the surface properties of BC. Because the BC-TG preparation process is simple, requires only water and raw materials, and does not involve chemical reactions, it is expected to be an environmentally friendly method for the preparation and modification of BC nanofibrils.
Let’s Connect: Impact Evaluation of an Intervention to Reduce Mental Health Disparities Among People Who are LGBTQ+
Authors: Facente Shelley N. , Davila Xochitlquetzal , Kowell Niko , Calma Nicky , Kwan Ming Ming , Gupta Shalika 
Published: February 2024

AbstractLesbian, gay, bisexual, transgender, queer, or similarly identified (LGBTQ+) people experience substantial mental health disparities compared to heterosexuals. The “Let’s Connect” intervention was designed to improve mental health outcomes for LGBTQ+ people. This impact evaluation aimed to assess effectiveness of this intervention during its pilot phase, using a single arm pilot trial. Respondents completed baseline surveys at intervention start, a post survey on the last day of the intervention (at 6 weeks), then a follow-up survey 6 weeks after the intervention ended (at 12 weeks). Pre-post differences in outcomes were analyzed using paired t-tests, chi-square tests, and generalized estimating equations to evaluate impact on mental health outcomes at 6 and 12 weeks, and identify characteristics associated with loss to follow-up. The average value of all three outcome measures decreased substantially between the baseline and post surveys; all of these differences were highly statistically significant, and further decreased between the end of the intervention at 6 weeks and the 12 week follow-up survey. Let’s Connect participants did experience substantial improvements in mental health outcomes, on average, between the start and end of this intervention. Further study of this intervention using a randomized design and control group is warranted.