bluuebunny/crossref_metadata_2025_split huggingface dataset:
Toroidal PCA via density ridges
Authors: García-Portugués Eduardo , Prieto-Tirado Arturo 
Published: July 2023

AbstractPrincipal Component Analysis (PCA) is a well-known linear dimension-reduction technique designed for Euclidean data. In a wide spectrum of applied fields, however, it is common to observe multivariate circular data (also known as toroidal data), rendering spurious the use of PCA on it due to the periodicity of its support. This paper introduces Toroidal Ridge PCA (TR-PCA), a novel construction of PCA for bivariate circular data that leverages the concept of density ridges as a flexible first principal component analog. Two reference bivariate circular distributions, the bivariate sine von Mises and the bivariate wrapped Cauchy, are employed as the parametric distributional basis of TR-PCA. Efficient algorithms are presented to compute density ridges for these two distribution models. A complete PCA methodology adapted to toroidal data (including scores, variance decomposition, and resolution of edge cases) is introduced and implemented in the companion R package . The usefulness of TR-PCA is showcased with a novel case study involving the analysis of ocean currents on the coast of Santa Barbara.
Disruption mitigation in the semiconductors supply chain by using public blockchains
Authors: Magdy Mirna , Grida Mohamed , Hussein Gawaher 
Published: July 2023

AbstractSupply chain management has become increasingly complex, leading to information loss and delayed transmission, exacerbating the bullwhip effect. Furthermore, the need for more reliable information storage, traceability, and accountability has slowed supply chain management. In this context, blockchain technology (BCT) solves the bullwhip effect problem, as it supports distributed networking, information synchronization among nodes, digital encryption, traceable information, and unchangeable block content. This paper proposes using public blockchain to solve the bullwhip effect problem in the supply chain (SC), which has yet to be discussed in published academic research papers. To this end, a framework has been developed to determine the readiness of a supply chain for blockchain adoption. This framework includes a checklist to evaluate the motivation, timing, and appropriate platform for adopting blockchain. The framework has been validated using a case study of personal computer devices, which were affected by the Covid-19 pandemic and resulted in semiconductors supply chain disruption. The study involved polling four executives The study involved polling four executives (of large organizations in Egypt and some Middle Eastern countries) representing different stages in the supply chain, they are retail, distribution, manufacturing, and supply. The results showed that while the executives recognized the benefits of adopting blockchain, they were still determining if it was the right time for adoption and did not see the technology ready for their supply chains. Finally, some public blockchain platforms were introduced to help businesses choose the most suitable platform for adoption.
Perspectivalism about temporal reality
Authors: Eker Bahadir 
Published: July 2023

AbstractIt is usually agreed that reality is temporal in the sense of containing entities that exist in time, but some philosophers, roughly those who have been traditionally called A-theorists, hold that reality is temporal in a far more profound sense than what is implied by the mere existence of such entities. This hypothesis ofdeep temporalitytypically involves two ideas: that reality istemporally compartmentalisedinto distinct present, past, and future ‘realms’, and that this compartmentalisation istemporally dynamicin the sense that the boundaries of those temporal realms change from one moment to the next. The truth of something like this hypothesis is commonly thought to require that at least some of the facts that fundamentally constitute reality betensed. While this seems plausible, realism about fundamental tensed facts does not seem to entail deep temporality. Nor is it clear exactly what realism about tense amounts to, given that no informative answer has been given to the question of what it is for a fact to be tensed. In this paper, I introduce a novel approach,perspectivalism about temporal reality, that seeks to vindicate the hypothesis of deep temporality by ascribing to reality a certain kind of temporally perspectival structure, which also provides a straightforward answer to the question of what the tensedness of facts consists in as well as to the question of what it is for reality to be constituted by such facts.
The Perspective of Community Members in the Assessment of the Social Value Generated by Non-profit and Voluntary Organizations
Authors: Mannarini Terri , Pozzi Maura , Marta Elena 
Published: July 2023

AbstractThis study aimed at developing a scale to measure Social Added Value (SAV) according to the perspective of community members, building on the relational framework and complementing the work of Mannarini et al. (Voluntas: Int J Voluntary Nonprofit Organ 29(6):1315–1329, 2018). The study was conducted on 720 Italian citizens who were not directly involved in Nonprofit and Voluntary Organizations (NPVOs) as active members to examine the statistical validity and psychometric properties of the SAV scale. Confirmatory factor analyses showed that good and satisfactory fit indexes were obtained by a third-order factor model saturated by two second-order variables (contribution to community and quality of external relationships) and eight first-order variables (services and tasks, vision, social responsibility, control mutuality, communality relationship, trust, commitment, capacity to build community connections). Additional analyses revealed that both perceived NPVOs target values and sense of belonging to the community were positively associated with SAV. Theoretical, methodological and practical implications of the findings are discussed.
MYH7 p.(Arg1712Gln) is pathogenic founder variant causing hypertrophic cardiomyopathy with overall relatively delayed onset
Authors: Marsili Luisa , van Lint Freyja H. M. , Russo Francesco , van Spaendonck-Zwarts Karin Y. , Ader Flavie , Bichon Marie-Line , Faivre Laurence , Houweling Arjan C. , Isidor Bertrand , Lekanne Deprez Ronald H. , Cox Moniek G. P. J. , Wilde Arthur A. M. , Mazel Benoit , Mercier Sandra , Dooijes Dennis , Millat Gilles , Nguyen Karine , Post Jan G. , Richard Pascale , van de Beek Irma , Vermeer Alexa M. C. , Boven Ludolf , Jongbloed Jan D. H. , van Tintelen J. Peter ,   The European Reference Network for Rare and Low Prevalence Complex Diseases of the Heart, Marsili Luisa , van Lint Freyja H. M. , van Tintelen J. Peter , Houweling Arjan C. , Lekanne Deprez Ronald H. , Wilde Arthur A. M. , Dooijes Dennis , Post Jan G. , van de Beek Irma , Vermeer Alexa M. C. , van Spaendonck-Zwarts Karin Y. , Ader Flavie , Richard Pascale , Isidor Bertrand , Bichon Marie-Line , Mercier Sandra 
Published: July 2023

Abstract
Introduction
The MYH7 c.5135G > A p.(Arg1712Gln) variant has been identified in several patients worldwide and is classified as pathogenic in the ClinVar database. We aimed to delineate its associated phenotype and evaluate a potential founder effect.

Methods
We retrospectively collected clinical and genetic data of 22 probands and 74 family members from an international cohort.

Results
In total, 53 individuals carried the MYH7 p.(Arg1712Gln) variant, of whom 38 (72%) were diagnosed with hypertrophic cardiomyopathy (HCM). Mean age at HCM diagnosis was 48.8 years (standard deviation: 18.1; range: 8–74). The clinical presentation ranged from asymptomatic HCM to arrhythmias (atrial fibrillation and malignant ventricular arrhythmias). Aborted sudden cardiac death (SCD) leading to the diagnosis of HCM occurred in one proband at the age of 68 years, and a family history of SCD was reported by 39% (5/13) probands. Neither heart failure deaths nor heart transplants were reported. Women had a generally later-onset disease, with 14% of female carriers diagnosed with HCM at age 50 years compared with 54% of male carriers. In both sexes, the disease was fully penetrant by age 75 years. Haplotypes were reconstructed for 35 patients and showed a founder effect in a subset of patients.

Conclusion
MYH7 p.(Arg1712Gln) is a pathogenic founder variant with a consistent HCM phenotype that may present with delayed penetrance. This suggested that clinical follow-up should be pursued after the seventh decade in healthy carriers and that longer intervals between screening may be justified in healthy women < 30 years.
DIFLD: domain invariant feature learning to detect low-quality compressed face forgery images
Authors: Zou Yan , Luo Chaoyang , Zhang Jianxun 
Published: July 2023

AbstractWith the rapid development of deep learning, face forgery detection methods have also achieved remarkable progress. However, most methods suffer significant performance degradation on low-quality compressed face images. It is due to: (a) The image artifacts will be blurred in the process of image compression, resulting in the model learning insufficient artifact traces; (b) Low-quality images will introduce a lot of noise information, and minimizing the training error causes the model to absorb all correlations in the training dataset recklessly, leading to the over-fitting problem. To solve the above problems, we consider learning domain invariant representations to inscribe the correct relevance, i.e., artifacts, to improve the robustness of low-quality images. Specifically, we propose a novel face forgery detector, called DIFLD. The model has the following components: (1) a high-frequency invariant feature learning module(hf-IFLM), which effectively retrieves the blurred artifacts in low-quality compressed images; and (2) a high-dimensional feature distribution learning module(hd-FDLM), that guides the network to learn more about the consistent features of distribution. With the above two modules, the whole framework can learn more discriminative correct artifact features in an end-to-end manner. Through extensive experiments, we show that our proposed method is more robust to image quality variations, especially in low-quality images. Our proposed method achieves a 3.67% improvement over the state-of-the-art methods on the challenging dataset NeuralTextures.
Adaptive fractional tracking control of robotic manipulator using fixed-time method
Authors: Ahmed Saim , Azar Ahmad Taher 
Published: July 2023

AbstractThis paper proposes an adaptive fractional-order sliding mode controller to control and stabilize a nonlinear uncertain disturbed robotic manipulator in fixed-time. Fractional calculus is used to construct a fractional-order sliding mode controller (FtNTSM) that suppresses chattering to help the robotic manipulator converge to equilibrium in a fixed-settling time based on fixed-time stability theory. Then, adaptive control is introduced and combined with FtNTSM to overcome the unknown system dynamics. The convergence time of the proposed fixed-time fractional-order sliding mode controller (AFtNTSM) is independent of beginning circumstances and can be precisely assessed, unlike the finite-time control approach. Finally, numerical simulations show that the adaptive fractional-order sliding mode controller outperforms finite-time sliding mode controller.
Evaluation of airlift pump performance for vertical conveying of coal particles
Authors: Enany Parviz , Shevchenko Oleksandr , Drebenshtedt Carsten 
Published: July 2023

AbstractOne of the crucial aspects of reducing air consumption when conveying particles with an airlift pump is to know the factors that affect the process of particle motion at an initial velocity of zero. To determine the influence of submergence ratio and physical properties of particles (such as size, shape, and mass) on the onset of vertical particle motion, the airlift pump was taken as the research object, and spherical glass together with irregular shaped coal were used as experimental test particles. The results show that unlike the water-solid environment, the start of particle motion in the water-air mixture does not always occur at a certain value of superficial water velocity and this value also increases with increasing submergence level. Among the parameters considered, the role of submergence ratio is much more effective than the dimensions and the shape of the particle, because by increasing submergence from 0.3 to 0.8, it is possible to reduce air consumption by up to 8 times. Based on this study the corresponding theoretical model derived by Fujimoto et al. is optimized, wherein the overall agreement between the modified theory and present experimental data is particularly good. Contrary to Fujimoto, the minimum superficial water velocity for lifting solids in the air-water mixture is not always smaller than water ambient which indicates on optimum submergence ratio higher than 0.7. Finally, a new criterion was introduced to describe the moment of onset of the particle motion as a function of the superficial fluid velocity ratio for each submergence value.
Effects of particle size and morphology on microwave cracking characteristics and cracking mechanism of three Fe-containing ores
Authors: Lin Feng , Feng Xia-Ting , Li Shi-Ping , Zhang Jiu-Yu , Su Xiang-Xin , Tong Tian-Yang 
Published: July 2023

AbstractMicrowave irradiation is a potential technology for use in rock fracturing. It is of great significance for the application of microwave technology in metal mines to understand the microwave cracking characteristics of ores and the mechanism of microwave action of ores. Taking Hongtoushan copper ore, Sishanling iron ore, and Dandong gold ore as research objects, the microwave cracking characteristics of ores with different morphologies (bulk/particle samples) and particle sizes were investigated. The microwave action mechanism of ores was revealed based on dielectric properties and arc characteristics. The results show that the change in morphology of the ore affects the microwave cracking characteristics thereof. The failure of iron ore and gold ore is characterized by the generation of cracks and the crack direction is related to the ore morphology. The bulk copper ore is not damaged after microwave irradiation, but the damage to particles of copper ore is characterized by scorching or scorching and melting accompanied by cracks. The more power applied, the larger the particles, and the stronger the arcing. Compared with the type and morphology of ore, particle size has little effect on dielectric properties. The microwave action mechanism of bulk copper ore (smooth surface) is a reflection effect and that of bulk copper ore (rough surface) is a discharge effect. The microwave mechanism of action on particulate copper ore is the combined action of discharge and heating effects, which leads to fracture. The microwave mechanism of action on iron ore and gold ore is mainly one of heating. The research results provide guidance for the development of microwave ore-cracking equipment and the selection of the optimal heating sequence.
A Test Stand for Quantifying the Core Gas Release and the Gas Permeability of Inorganically-Bound Foundry Cores
Authors: Kirchebner Benedikt , Kammerloher Simon , Fuchs Georg , Reberger Erwin , Volk Wolfram , Lechner Philipp 
Published: July 2023

AbstractEnvironmental and work safety aspects necessitate a radical change in the foundry industry. Organic binder systems for foundry sand cores create toxic combustion products and are, therefore, more and more often substituted by inorganic binder systems. While providing an environmental advantage by mainly releasing water vapor, inorganic binder systems impose new challenges for the casting process. The gas release of inorganically-bound foundry cores can lead to increased gas porosity in the cast parts and thus to high scrap rates. The present work aims to gain more understanding of the gas generation and transport in inorganic sand binder systems. We developed a test stand to measure the temperature-dependent core gas release in inorganically-bound foundry cores and their gas permeability. Samples were prepared in a core blowing process and analyzed using the test stand. The measurement results are in good agreement with validation experiments and existing literature.
Diversity of epistemologies in African higher education: an interdisciplinary perspective on the contribution of digital communities of practice to equitable knowledge production
Authors: Schoelen Leonie , Sebihi Abbes , Azab-Els Sherif , Sano Mariame 
Published: July 2023

Abstract
This interdisciplinary article proposes a holistic approach to address challenges faced by African higher education owing to the shift to digital technology and online learning. The approach draws on theories of knowledge to promote equitable knowledge production and bridge the digital divide. The article highlights the potential of communities of practice as a complementary tool to indigenous methods and calls for the use of all available resources, including indigenous languages, to overcome existing inequalities and promote dynamic knowledge construction. The importance of understanding the historical influence of colonial and pre-colonial practices on epistemology is also emphasized. The article offers innovative approaches and insights to support equitable and inclusive knowledge production in African higher education contexts, with a focus on the Western region of the continent, facilitated by novel technologies that have been rolled out in learning institutions globally.
From The Anfield Wrap to Boss Night and the Paris Protests: Football, Politics, Identity and the Cultural Evolution of Fan Media and Supporter Activism in Liverpool
Authors: Rookwood Joel , Hoey Paddy 
Published: July 2023

AbstractThere have been significant recent developments in media produced by football fans, from social media and online magazines to podcasts, YouTube channels and live events. 21st century technologies have facilitated new types of supporter-produced media, rendering the means of production more accessible to fans. In Liverpool, fan channels have emerged, influenced by the city’s musical heritage and political and cultural identity. For instance, modern events such as Boss Night and podcasts produced by The Anfield Wrap (TAW) have helped provide an authentic voice for the city’s contemporary football culture, political identity and connected social activism. Due to globalised media networks, they can also offer an educational mobilising hub for those interested in Liverpool’s current idiosyncratic cultural and political civic context. This research is informed by literature on fan media and activism and draws on collective identity theory and Bourdieu’s notion of habitus. In-depth interviews were conducted with experienced supporters and various individuals closely associated with the production of fan media. Structurally, the paper outlines Liverpool’s historical, cultural, sporting and fan media context. It then analyses data detailing the evolution of Boss Mag to Boss Night events and examining The Anfield Wrap as an innovative site of content creation. Contextually, the paper explores fan activism through the mediatised protest of Liverpool’s ownership and collective expressions of political identity. Finally, it draws on the experiences of supporters at the 2022 Champions League final in Paris and the use of technology and fan media in capturing and responding to the mistreatment of supporters.
Construction of the hierarchical porous biochar with an ultrahigh specific surface area for application in high-performance lithium-ion capacitor cathode
Authors: Zhu Haotian , Li Jiayuan , Wu Dichao , Zhang Gaoyue , Sun YunJuan , Wang Ao , Sun Kang 
Published: July 2023

AbstractBiochar with a highly accessible specific surface area can display a higher performance when it is used as the cathode of lithium-ion capacitors. Facing the complex composition and diversity of biomass precursors, there is a lack of a universally applicable method to construct hierarchical porous biochar controllably. In this work, a multi-stage activation strategy combining the feature of different activation methods is proposed for this target. To confirm the porous characteristic in prepared samples, N2adsorption–desorption and transmission electron microscope were used. As the optimal sample, BC-P3K4S had the highest specific surface area of 3583.3 m2 g−1. Evaluated as the electrode for a lithium-ion capacitor, BC-P3K4S displayed a capacity of 139.1 mAh g−1 at 0.1 A g−1. After coupling it with pre-lithiated hard carbon, the full device exhibited a high energy density of 129.3 W h kg−1at 153 W kg−1. The work outlined herein offers some insights into the preparation of hierarchical porous biochar from complex biomass by multistep activation method.Graphical Abstract
The many meanings of meaningful human control
Authors: Robbins Scott 
Published: July 2023

Abstract
The concept of Meaningful Human Control (MHC) has gained prominence in the field of Artificial Intelligence ethics. MHC is discussed in relation to lethal autonomous weapons, autonomous cars, and more recently, AI systems in general. Little, however, has been done to analyze the concept. Those using MHC tend to look at it narrowly and intuitively—as if it is clear what it means. They fail to see the many issues concerning human control over machines. In this article, I break the concept into its three constitutive words (‘meaningful’, ‘human’, and, ‘control’) to outline the many meanings of MHC. While the intention is not to come to the real meaning of MHC, this analysis brings up the many issues that should be considered if meaningful human control is to be realized. These include: which humans count as meaningful in the application context, whether the control those humans are given must be meaningful, whether humans must retain control over the things that are meaningful in life, whether the style of control is human-like, whether each actor (designer, operator, subject, government) has the control they need, and what it is exactly that a human is controlling (e.g., the training data, the inputs, the outputs, etc. of the AI system).
Hypermethylated GPR135 gene expression is a favorable independent prognostic factor in nasopharyngeal carcinoma
Authors: Gan Chunqiao , Qin Guanjie , Liao Shufang , Liao Xiaofei , Xu Jinping , Jiang Wei 
Published: July 2023

Abstract
Purpose
To investigate the methylation status and expression level of G protein-coupled receptor 135 (GPR135) in nasopharyngeal carcinoma (NPC) and determine its prognostic value.

Methods
The GPR135 methylation data of NPC and normal nasopharyngeal tissues were obtained from the Gene Expression Omnibus (GEO) GSE52068 dataset. The GPR135 promoter region methylation level in four normal nasopharyngeal epithelial tissues and eight NPC tissues was detected by bisulfite sequencing. GPR135 expression in NPC and normal nasopharyngeal tissue was obtained from the GEO GSE13597 dataset.The GPR135 mRNA expression levels in 13 NPC and 26 healthy control tissues were assessed with quantitative real-time PCR (qRT-PCR). The GPR135 expression level in 124 NPC tissue sections was analyzed by immunohistochemistry. The correlation between GPR135 expression and clinicopathological features was analyzed by a chi-square test. GPR135 expression in patients with NPC was evaluated by immunohistochemistry, and its influence on prognosis was assessed by Kaplan-Meier and Cox regression analyses.

Results
The bisulfite sequencing demonstrated that the GPR135 promoter region was highly methylated in NPC tissues. The immunohistochemistry results revealed that patients with high GPR135 expression had better overall survival (hazard ratio [HR] = 0.177, 95% confidence interval [95%CI]: 0.072–0.437, P = 0.008), disease-free survival (HR = 0.4401, 95%CI: 0.222–0.871, P = 0.034), and local recurrence-free survival (HR = 0.307, 95%CI: 0.119–0.790, P = 0.046) than those with low GPR135 expression.

Conclusion
GPR135 is hypermethylated in NPC, where high GPR135 expression indicates a positive prognosis. Therefore, GPR135 might be a prognostic indicator.