bluuebunny/crossref_metadata_2025_split huggingface dataset:
Classification of cervical cells from the Pap smear image using the RES_DCGAN data augmentation and ResNet50V2 with self-attention architecture
Authors: Wubineh Betelhem Zewdu , Rusiecki Andrzej , Halawa Krzysztof 
Published: September 2024

AbstractCervical cancer is a type of cancer in which abnormal cell growth occurs on the surface lining of the cervix. In this study, we propose a novel residual deep convolutional generative adversarial network (RES_DCGAN) for data augmentation and ResNet50V2 self-attention method to classify cervical cells, to improve the generalizability and performance of the model. The proposed method involves adding residual blocks in the generator of the DCGAN to enhance data flow and generate higher-quality images. Subsequently, a self-attention mechanism is incorporated at the top of the pre-trained models to allow the model to focus more on significant features of the input data. To evaluate our approach, we utilized the Pomeranian and SIPaKMeD cervical cell imaging datasets. The results demonstrate superior performance, achieving an accuracy of 98% with Xception and 96.4% with ResNet50V2 on the Pomeranian dataset. Additionally, DenseNet121 with self-attention achieved accuracies of 92% and 95% in multiclass and binary classification, respectively, using the SIPaKMeD dataset. In conclusion, our RES_DCGAN-based data augmentation and pre-trained with self-attention model yields a promising result in the classification of cervical cancer cells.
Nitroxide Spin Labels for Exploring Relationships Between Molecular Structure, Microenvironment and EPR Parameters: A Mini-review Dedicated to Carlo Corvaja
Authors: Möbius Klaus , Savitsky Anton , Plato Martin , Lubitz Wolfgang 
Published: September 2024

AbstractThis mini-review is dedicated to Carlo Corvaja (University of Padova) in recognition of his important contributions to the study of biomimetic donor–acceptor model dyads and triads and to the understanding of spin exchange in excited fullerene–nitroxide derivatives. We report on attractive examples of multi-frequency and multi-resonance EPR spectroscopy, highlighting recent work in Padova and Berlin/Mülheim. The examples selected include TR-EPR, ENDOR, and EDNMR experiments on photoexcited spin-labeled macromolecules, such as fullerene–nitroxide complexes or photosynthetic bacterial reaction centers, which were optionally NO spin-labeled. From the spin interaction parameters measured, detailed information about structure and dynamics of macromolecules embedded in liquid-solution or solid-state microenvironments could be extracted.
Assessing the impact of engine and non-engine urban noises on the calls of urban frogs: a natural experiment
Authors: Serrano José Manuel , Vázquez-Hernández Zeltzin Karina , Hernández-Jiménez Carlos A. , Villarreal-Olvera Esaú Toaki , Ochoa-Ochoa Leticia M. 
Published: September 2024

AbstractUrban noise can potentially disturb the acoustic signals of animals inhabiting urban areas. Although a wide variety of noises from different sources is common in cities, the impact of non-engine noise on animal calls is less studied. In a natural experiment, we evaluated the effect of different urban noises on the advertisement calls of urban frogs (Eleutherodactylus nitidus) in the metropolitan area of Puebla, Mexico. We recorded and analyzed 672 advertisement calls from 28 male frogs and the corresponding environmental noises from three distinct localities. Our analysis focused on four acoustic properties of the calls: inter-call interval, call duration, dominant frequency, and call amplitude. To standardize the amplitude measurements of sound pressure levels produced by noise and frog calls, we employed a practical approach using a reference signal for calibration. We treated the longitudinal data of different noises occurring before, during, and after advertisement calls as repeated measures within the urban locations. During our samplings, frogs called amidst spontaneous urban noises, including dog barking, fireworks, and vehicle engine sounds. Our results indicate that vehicle engine sounds and dog barking do not cause significant distortions in the calls of these urban frogs. However, we observed slight variations in the dominant frequency of calls, decreasing by 11 Hz, during and after fireworks. Given the observed plasticity of E. nitidus in response to noise, urban noises may not pose a severe problem for this urban frog.
Characterization of Composite Agarose–Collagen Hydrogels for Chondrocyte Culture
Authors: Zigan Clarisse , Benito Alston Claudia , Chatterjee Aritra , Solorio Luis , Chan Deva D. 
Published: September 2024

Abstract
To elucidate the mechanisms of cellular mechanotransduction, it is necessary to employ biomaterials that effectively merge biofunctionality with appropriate mechanical characteristics. Agarose and collagen separately are common biopolymers used in cartilage mechanobiology and mechanotransduction studies but lack features that make them ideal for functional engineered cartilage. In this study, agarose is blended with collagen type I to create hydrogels with final concentrations of 4% w/v or 2% w/v agarose with 2 mg/mL collagen. We hypothesized that the addition of collagen into a high-concentration agarose hydrogel does not diminish mechanical properties. Acellular and cell-laden studies were completed to assess rheologic and compressive properties, contraction, and structural homogeneity in addition to cell proliferation and sulfated glycosaminoglycan production. Over 21 days in culture, cellular 4% agarose–2 mg/mL collagen I hydrogels seeded with primary murine chondrocytes displayed structural and bulk mechanical behaviors that did not significantly alter from 4% agarose-only hydrogels, cell proliferation, and continual glycosaminoglycan production, indicating promise toward the development of an effective hydrogel for chondrocyte mechanotransduction and mechanobiology studies.
Experimental Characterisation of Cure-Dependent Spring-Back Behaviour of Metal-Composite Laminates in a Hot-Pressing Process
Authors: Liu Shichen , Sinke Jos , Dransfeld Clemens 
Published: September 2024

Abstract
This study focuses on the spring-back as a function of the degree of cure on single-curved metal-composite laminates. The manufacturing through a hot-pressing process involves different (curing) stages and can reduce the spring-back with the proper combination of forming and curing. The cure-dependent spring-back is measured and analysed as a function of material constituents, fibre directions, laminate layups, and the process parameters including temperature, holding time and pressure. The results demonstrate that the spring-back ratio after full-cured process is relatively small and mainly depends on the mechanical properties of the metal sheet in laminates. However, temperature and time have a significant effect on the spring-back of partially-cured laminates and the same type of fibre prepreg combined with two different metal sheets have similar trends of spring-back reduction. Moreover, the study found that the hybrid laminates with aluminium sheet delaminate at low pressure after full-cured, while the delamination disappears as the pressure increases. The characterisation on cure-dependency of the spring-back contributes to a better understanding of the deformability of the metal-composite laminates during the hot-pressing process and offers an opportunity to tune the spring-back of these laminates.
Multilevel approximation of Gaussian random fields: Covariance compression, estimation, and spatial prediction
Authors: Harbrecht Helmut , Herrmann Lukas , Kirchner Kristin , Schwab Christoph 
Published: September 2024

AbstractThe distribution of centered Gaussian random fields (GRFs) indexed by compacta such as smooth, bounded Euclidean domains or smooth, compact and orientable manifolds is determined by their covariance operators. We consider centered GRFs given as variational solutions to coloring operator equations driven by spatial white noise, with an elliptic self-adjoint pseudodifferential coloring operator from the Hörmander class. This includes the Matérn class of GRFs as a special case. Using biorthogonal multiresolution analyses on the manifold, we prove that the precision and covariance operators, respectively, may be identified with bi-infinite matrices and finite sections may be diagonally preconditioned rendering the condition number independent of the dimension p of this section. We prove that a tapering strategy by thresholding applied on finite sections of the bi-infinite precision and covariance matrices results in optimally numerically sparse approximations. That is, asymptotically only linearly many nonzero matrix entries are sufficient to approximate the original section of the bi-infinite covariance or precision matrix using this tapering strategy to arbitrary precision. The locations of these nonzero matrix entries can be determined a priori. The tapered covariance or precision matrices may also be optimally diagonally preconditioned. Analysis of the relative size of the entries of the tapered covariance matrices motivates novel, multilevel Monte Carlo (MLMC) oracles for covariance estimation, in sample complexity that scales log-linearly with respect to the number p of parameters. In addition, we propose and analyze novel compressive algorithms for simulating and kriging of GRFs. The complexity (work and memory vs. accuracy) of these three algorithms scales near-optimally in terms of the number of parameters p of the sample-wise approximation of the GRF in Sobolev scales.
An updated survey of attended home delivery and service problems with a focus on applications
Authors: Cordeau Jean-François , Iori Manuel , Vezzali Dario 
Published: September 2024

AbstractThe research field of Attended Home Delivery (AHD) and Attended Home Service (AHS) problems has experienced fast growing interest in the last two decades, with the rapid growth of online platforms and e-commerce transactions. The radical changes in consumer lifestyles and habits as well as the COVID-19 pandemic contingency have reinforced that interest, raising further challenges and opportunities that need to be addressed by innovative methodologies and policies. The aim of this work is to provide an extensive literature review on the state of the art for AHD and AHS problems, with a particular focus on real-world applications. A discussion of promising future research directions is also provided.
Documenting Territorialidad: an intercultural approach to the provenance of Mapuche land records
Authors: Montenegro María 
Published: September 2024

AbstractUsing critical place research and documentary methods, this article examines the Mapuche territorial cause in Chile and exposes the deficiencies of state-produced Mapuche land titles, known as Títulos de Merced, which are required for and (mis)used as evidence by Chile’s Indigenous land restitution program. The Títulos de Merced were granted to Mapuche families during and after the military occupation of Wallmapu (Mapuche territory), as documentation of their relocation to reducciones (reservations) between 1884 and 1929. However, these approximately 3000 titles do not fully represent Mapuche land claims. Instead, they were used by the newly formed Chilean state to reduce Mapuche territory to approximately 5% of its ancestral span, leaving undocumented much of the territories that communities were effectively using before the reduction process––what Mapuche claimants refer to as tierras antiguas or ancestral lands. Despite this, CONADI, the government agency that administers the land program, defines these titles as the primary sources of documentary evidence to prove Mapuche land dispossession. Therefore, not only are the Títulos de Merced not enough, but they negatively impact Mapuche land claims by purposefully reducing, once again, Mapuche ancestral territory, this time discursively. Mapuche claimants are paradoxically forced to validate claims to their ancestral land through documents that were designed to legitimize their dispossession. By examining the insufficiency and inappropriateness of the Títulos de Merced as evidence for Mapuche territorial claims, this paper proposes the intercultural practice of documenting territorialidad—the expression of cultural, economic, and spiritual Mapuche practices over the territory—in addition to colonial demarcations of land, as a form of producing/using evidence for Mapuche land restitution claims. Suggesting the mapu (land/territory) as provenance and territorialidad as evidence, this alternative documentary practice unsettles the Títulos de Merced as the only legitimate form of evidence for Mapuche land claims and theorizes interculturalidad—the recognition of and dialogue between diverse ways of knowing coexisting within the same territory—as a framework for thinking about provenance when working with Indigenous land records.
“I Just Wouldn't Like Him to go Through What I Went Through as a Kid”: A Qualitative Study on the Mitigating Effects of Positive Childhood Experiences in Mothers with a History of Adverse Childhood Experiences in an Irish Population
Authors: Tadjine Lamia , Swords Lorraine 
Published: September 2024

AbstractAdverse Childhood Experiences (ACEs) are increasingly being acknowledged as a major risk factor for instigating and sustaining cycles of trauma between mother and child. Recently, the concept of Benevolent Childhood Experiences (BCEs) has been introduced to ACEs research as a buffer against the transmission of ACEs between generations. Positive childhood experiences such as attachment to caregivers, positive peer relations and positive sense of self have been found to counteract the effects of adverse childhood experiences. The emergence of positive childhood experiences as an adaptive capacity against ACEs should be explored as a tool for psychological change, to help break the cycle of inherited trauma between generations. The present study aims to examine the lived experiences of mothers with a history of ACEs, if they consider their positive childhood experiences when parenting, and how they use these positive experiences to break the cycle of intergenerational trauma. Three women residing in a low-support service for parenting were recruited for this study. Participants were all low-income, first-time single mothers in their early thirties. A qualitative approach was designed for the study. ACEs and BCEs questionnaires were administered to participants and scores were taken into account to contextualise participant interviews. A semi-structured interview was designed in accordance with IPA guidelines. Questions were directed towards phenomenological material, focusing on participants’ understanding of their experiences as mothers. Analysis of the interview data revealed three superordinate themes (replicating positive experiences, creating new positive experiences and protecting children from intergenerational trauma) related to participants' BCEs, their children’s BCEs and their desire to break the cycle of intergenerational trauma. The findings of this study, namely that participants intentionally tried to create positive experiences with their own children through drawing on their own positive experiences in childhood, supports the idea that BCEs are a legitimate source of adaptive capacity for mothers with ACEs. Parenting interventions for parents with ACEs should be developed taking into account ACE and BCE scores.
FRUITS: feature extraction using iterated sums for time series classification
Authors: Diehl Joscha , Krieg Richard 
Published: September 2024

AbstractWe introduce a pipeline for time series classification that extracts features based on the iterated-sums signature (ISS) and then applies a linear classifier. These features are intrinsically nonlinear, capture chronological information, and, under certain settings, are invariant to a form of time-warping. We achieve competitive results, both in accuracy and speed, on the UCR archive. We make our code available at https://github.com/irkri/fruits.
Minimum wage non-compliance: the role of co-determination
Authors: Goerke Laszlo , Pannenberg Markus 
Published: September 2024

AbstractWe analyse how co-determination is related to non-compliance with the German minimum wage, which was introduced in 2015. The Works Constitution Act (WCA), the law regulating co-determination at the plant level, provides works councils with indirect means to ensure compliance with the statutory minimum wage. Based on this legal situation, our theoretical model predicts that non-compliance is less likely in co-determined firms because works councils enhance the enforcement of the law. The economic correlates of co-determination, such as higher productivity and wages, affect non-compliance in opposite directions. The empirical analysis, using data from the German Socio-economic Panel (SOEP) for the years 2016 and 2019, demonstrates that non-compliance occurs less often for employees in co-determined establishments, while there is no correlation between non-compliance and the difference between the minimum wage and the wage actually paid.
Arrival Times Versus Detection Times
Authors: Goldstein Sheldon , Tumulka Roderich , Zanghì Nino 
Published: September 2024

AbstractHow to compute the probability distribution of a detection time, i.e., of the time which a detector registers as the arrival time of a quantum particle, is a long-debated problem. In this regard, Bohmian mechanics provides in a straightforward way the distribution of the time at which the particle actually does arrive at a given surface in 3-space in the absence of detectors. However, as we discuss here, since the presence of detectors can change the evolution of the wave function and thus the particle trajectories, it cannot be taken for granted that the arrival time of the Bohmian trajectories in the absence of detectors agrees with the one in the presence of detectors, and even less with the detection time. In particular, we explain why certain distributions that Das and Dürr (Sci. Rep. 9: 2242, 2019) presented as the distribution of the detection time in a case with spin, based on assuming that all three times mentioned coincide, are actually not what Bohmian mechanics predicts.
A Multilevel Method for Self-Concordant Minimization
Authors: Tsipinakis Nick , Parpas Panos 
Published: September 2024

AbstractThe analysis of second-order optimization methods based either on sub-sampling, randomization or sketching has two serious shortcomings compared to the conventional Newton method. The first shortcoming is that the analysis of the iterates has only been shown to be scale-invariant only under specific assumptions on the problem structure. The second shortfall is that the fast convergence rates of second-order methods have only been established by making assumptions regarding the input data. In this paper, we propose a randomized Newton method for self-concordant functions to address both shortfalls. We propose a Self-concordant Iterative-minimization-Galerkin-based Multilevel Algorithm (SIGMA) and establish its super-linear convergence rate using the theory of self-concordant functions. Our analysis is based on the connections between multigrid optimization methods, and the role of coarse-grained or reduced-order models in the computation of search directions. We take advantage of the insights from the analysis to significantly improve the performance of second-order methods in machine learning applications. We report encouraging initial experiments that suggest SIGMA outperforms other state-of-the-art sub-sampled/sketched Newton methods for both medium and large-scale problems.
Metal alkoxides as models for metal oxides—the concept revisited
Authors: Kessler Vadim G. 
Published: September 2024

AbstractSol-Gel synthesis of metal oxides constitutes a tremendously exciting domain of inorganic chemistry, where molecular and supramolecular science meet the physical chemistry and materials science. Structure and reactivity, especially surface complexation of biologically important molecules on the surface of metal oxide nanoparticles can efficiently be traced through structural studies of metal oxo-paperbags—the product of partial hydrolysis of alkoxide precursors. Paperbag is a recently proposed term to denote oligonuclear complexes not featuring intrinsic metal-metal bonding and thus not qualified to be called “clusters”. Another important insight, provided recently by the studies of heterometallic species, is dealing with visualization of bonding modes of single atom catalysts on metal oxide substrates and reveals possible coordination environments of heteroatoms on doping. The studies of large paperbag aggregates can contribute to understanding of factors influencing the bandgap and photocatalytic activity of related oxides. The use of these species directly as photo or electro catalysts is rather debatable, however, in the view of high reactivity of these alkoxide intermediates, easily transforming them into metal oxide nanoparticles on hydrolysis or thermolysis.
Graphical Abstract
Exploring Action Research Sponsorship: Role and Enactment
Authors: Saabye Henrik , Coughlan Paul , Kristensen Thomas Borup 
Published: September 2024

AbstractThis paper explores the complexities of involving partner organisations in co-generative learning processes within Action Research (AR) initiatives. Despite formal agreements, action researchers often face challenges in collaboratively addressing specific organisational issues through AR cycles. When action researchers adopt the “friendly outsider’ role, their initial task is to secure commitment to an AR initiative from senior leaders as sponsors. However, the existing literature lacks comprehensive guidance on facilitating this commitment. Therefore, drawing from both literature and empirical cases, this paper examines the pivotal role of the AR sponsor in securing funding and political backing, offering constructive critique, and facilitating learning. It provides insights into how action researchers can facilitate sponsors to enact these roles effectively so as to ensure the success and sustainability of organisational changes resulting from AR initiatives.
The Harm of Social Media to Public Reason
Authors: Benton Paige , Schmidt Michael W. 
Published: September 2024

AbstractIt is commonly agreed that so-called echo chambers and epistemic bubbles, associated with social media, are detrimental to liberal democracies. Drawing on John Rawls’s political liberalism, we offer a novel explanation of why social media platforms amplifying echo chambers and epistemic bubbles are likely contributing to the violation of the democratic norms connected to the ideal of public reason. These norms are clarified with reference to the method of (full) reflective equilibrium, which we argue should be cultivated as a civic virtue in the context of political justification. The paper demonstrates how epistemic bubbles and echo chambers are likely to be detrimental to the disposition to follow the method of reflective equilibrium in the political context. Based on this diagnosis the paper highlights the need for interventions that help cultivate reflective equilibrium as a civic virtue and the need for corresponding interdisciplinary research.