bluuebunny/crossref_metadata_2025_split huggingface dataset:
Features and signals in precocious citation impact: a meta-research study
Authors: Ioannidis John P.A. 
Published: October 2024

ABSTRACTSome scientists reach top citation impact in a very short time once they start publishing. The current analysis defined precocious citation impact as rising to become a top-cited scientist within t≤8 years after the first publication year. Ultra-precocious citation impact was defined similarly for t ≤5 years. Top-cited authors included those in the top-2% of a previously validated composite citation indicator across 174 subfields of science or in the top-100,000 authors of that composite citation indicator across all science based on Scopus. Annual data between 2017 and 2023 show a strong increase over time, with 469 precocious and 66 ultra-precocious citation impact Scopus author IDs in 2023. In-depth assessment of validated ultra-precocious scientists in 2023, showed significantly higher frequency of less developed country affiliation (71%), clustering in 4 high-risk subfields (Environmental Sciences, Energy, Artificial Intelligence & Image Processing, Mechanical Engineering & Transports) (64%), self-citations for their field above the 95thpercentile (31%), being top-cited only when self-citations were included (20%), citations to citing papers ratio for their field above the 95thpercentile (15%), extreme publishing behavior (7%), and extreme citation orchestration metric c/h2<2.45 (15%) compared with all top-cited authors (p<0.005 for all signals). The 17 ultra-precocious citation impact authors in the 2017-2020 top-cited lists who had retractions by October 2024 showed on average 4 of these 7 signal indicators at the time they entered the top-cited list. While some authors with precocious citation impact may be stellar scientists, others probably herald massive manipulative or fraudulent behaviors infiltrating the scientific literature.Significance statementExtreme performance may herald either extreme excellence or extreme inappropriate and outright fraudulent practices. Some authors reach the very top ranks in cumulative citation impact within only a few years, while even accomplished scientists take decades to reach these levels, if ever. A science-wide analysis of the authors with the most impressively precocious citation performance reveals that most of them come from less developed countries with limited resources, they heavily cluster in some scientific subfields, and they often have multiple signal indicators that may suggest problematic behavior. Some of these scientists are unquestionably excellent, while others may be manipulative or fraudulent. Evaluation of extreme cases allows science-wide views of the penetration of massive manipulative practices in scientific publication and citation.
EMC regulates cell membrane fluidity to facilitate biogenesis of membrane proteins
Authors: Berraquero Modesto , Tallada Víctor A. , Jimenez Juan 
Published: October 2024

SUMMARYThe EMC complex is a highly conserved transmembrane chaperone located in the endoplasmic reticulum (ER). This complex has been associated in humans with sterol homeostasis and a myriad of different cellular activities, making the mechanism of EMC functionality enigmatic. Using fission yeast, we demonstrate that EMC assists biogenesis of the sterol transfer protein Lam6/Ltc1 at the ER-Plasma membrane and ER-Mitochondria contact sites. Cells losing EMC function sequester unfolded Lam6/Ltc1 and other proteins at the mitochondrial matrix, driving to surplus ergosterol, cold-sensitive growth and mitochondrial disfunctions. Remarkably, inhibition of the ergosterol biosynthesis, but also fluidization of cell membranes to counteract its rigidizing effects, reduce the ER-unfolded protein response and rescue growth and mitochondrial defects in EMC-deficient cells. These results indicate that EMC-assisted biogenesis of Lam6/Ltc1 provides, through ergosterol homeostasis, optimal membrane fluidity to facilitate biogenesis of other ER-membrane proteins.HIGHLIGHTS- Lam6/Ltc1 requires EMC for localization at ER-Plasma membrane and ER-Mitochondria contact sites.- EMC-driven biogenesis of Lam6/Ltc1 is involved in membrane fluidity homeostasis.- EMC-deficient cells accumulate misfolded proteins in the mitochondrial matrix.- Cell membrane fluidization alleviates the ER-misfolded proteins response and rescues growth and mitochondrial defects of EMC-deficient cells.Graphical AbstractSchematic representation of EMC-membrane fluidity homeostasis connecting protein folding and mitochondrial activity.
Structural organization of p62 filaments and the cellular ultrastructure of calcium-rich p62-enwrapped lipid droplet cargo
Authors: Berkamp Sabrina , jungbluth Lisa , Katranidis Alexandros , Mostafavi Siavash , Korculanin Olivera , Lu Peng-Han , Sharma Lokesh , Thukral Lipi , Fitter Jörg , Dunin-Borkowski Rafal E. , Sachse Carsten 
Published: October 2024

AbstractThe selective autophagy receptor p62/SQSTM1 (from hereon p62) is known to form higher-order filaments in vitro and to undergo liquid-liquid phase separation when mixed with poly-ubiquitin. We determined the full-length cryo-EM structure of p62 and elucidated a structured double helical filament scaffold composed of the PB1-domain associated with the flexible C-terminal part residing in the lumen and the solvent-accessible major groove. At different pH values and upon binding to soluble LC3, LC3-conjugated membranes and poly-ubiquitin, we observed p62 filament re-arrangements in the form of structural unwinding, disassembly, lateral association and bundling, respectively. In the cellular environment, under conditions of ATG5 knockdown leading to stalled autophagy, we imaged high-contrast layers consisting of p62 oligomers enwrapping lipid droplets by cryogenic electron tomography in cellulo, which we identified as calcium phosphate by compositional spectroscopy analysis. Together, we visualized the cellular ultrastructure of p62 oligomers with high calcium content as a potential intermediate step of autophagy initiation.
Efficient, high-fidelity single-photon switch based on waveguide-coupled cavities
Authors: Duda Mateusz , Brunswick Luke , Wilson Luke R. , Kok Pieter 
Published: October 2024

We demonstrate theoretically that waveguide-coupled cavities with embedded two-level emitters can act as a highly efficient, high-fidelity single-photon switch. The photon switch is an optical router triggered by a classical signal—the propagation direction of single input photons in the waveguide is controlled by changing the emitter-cavity coupling parameters , for example, using applied fields. The switch reflects photons in the weak emitter-cavity coupling regime and transmits photons in the strong coupling regime. By calculating transmission and reflection spectra using the input-output formalism of quantum optics and the transfer matrix approach, we obtain the fidelity and efficiency of the switch with a single-photon input in both regimes. We find that a single waveguide-coupled cavity can route input photon wave packets with near-unity efficiency and fidelity if the wave packet width is smaller than the cavity mode linewidth. We also find that using multiple waveguide-coupled cavities increases the switching bandwidth, allowing wider wave packets to be routed with high efficiency and fidelity. For example, an array of three waveguide-coupled cavities can reflect an input Gaussian wave packet with a full width at half-maximum of 1 nm (corresponding to a few-picosecond pulse) with an efficiency Er=96.4% and a fidelity Fr=97.7%, or transmit the wave packet with an efficiency Et=99.7% and a fidelity Ft=99.8%. Such efficient, high-fidelity single-photon routing is essential for scalable photonic quantum technologies.

Published by the American Physical Society
2024
Monte Carlo simulation code for polarized inverse Compton scattering sources
Authors: Zhang Hongze , Chi Zhijun , Du Yingchao , Huang Wenhui , Tang Chuanxiang 
Published: October 2024

Polarized x rays or gamma rays generated from inverse Compton scattering (ICS) sources are high-brightness, quasimonochromatic, and polarization-tunable and are widely applied in medical imaging, material science, and nuclear physics research. In this paper, to simulate ICS between electron beams and polarized laser beams, a Monte Carlo simulation code has been developed and implemented based on the 4 toolkit. This code considers the polarization as well as the bandwidth of incident laser beams. The code is benchmarked by comparing its simulation results with those from the well-known Monte Carlo tool called and experimental results. The comparisons show that this code accurately reproduces the scattered photons, demonstrating its potential for various ICS-based applications.

Published by the American Physical Society
2024
Dynamical tidal Love numbers of Kerr-like compact objects
Authors: Chakraborty Sumanta , Maggio Elisa , Silvestrini Michela , Pani Paolo 
Published: October 2024

We develop a framework to compute the tidal response of a Kerr-like compact object in terms of its reflectivity, compactness, and spin, both in the static and the frequency-dependent case. Here we focus on the low-frequency regime, which can be solved fully analytically. We highlight some remarkable novel features, in particular, the following: (i) Even in the zero-frequency limit, the tidal Love numbers (TLNs) depend on the linear-in-frequency dependence of the object’s reflectivity in a nontrivial way. (ii) Intriguingly, although the static limit of the (phenomenologically more interesting) frequency-dependent TLNs is continuous, it differs from the strictly static TLNs for compact objects other than black holes. This shows that earlier findings regarding the static TLNs of ultracompact objects correspond to a measure-zero region in the parameter space, though the logarithmic behavior of the TLNs in the black hole limit is retained. (iii) In the nonrotating case, the TLNs in the zero-frequency limit (just like for a black hole), except when the reflectivity is R=1+O(Mω), in which case they vanish with a model-dependent scaling, which is generically logarithmic, in the black-hole limit. The TLNs initially grow with frequency, for any nonzero reflectivity, and then display oscillations and resonances tied up with the quasinormal modes of the object. (iv) For rotating compact objects, the TLNs decrease when the reflectivity decreases or the rotation parameter increases. Our results lay the theoretical groundwork to develop model-independent tests of the nature of compact objects using tidal effects in gravitational-wave signals.

Published by the American Physical Society
2024
Innovation capabilities and international competitiveness of agro-processing firms in Uganda
Authors: Ahimbisibwe Godwin Mwesigye , Ecel Aaron , Nuwagaba Dennis , Nakigudde Racheal , Mpiriirwe Rinah Faith , Kiplangat Leonard 
Published: October 2024

Purpose
This paper aims to contribute to the understanding of the relationship between the different innovation capabilities and the international competitiveness of agro-processing firms in Uganda.

Design/methodology/approach
This study adopted a cross-sectional research design. Data were collected through a questionnaire survey of 125 firms exporting agro-processed products that are members of the Uganda Export Promotions Board (UEPB). Data was analyzed using the Statistical Package for Social Scientists (SPSS).

Findings
The study established that product innovation capabilities and organizational innovation capabilities are positively related to the international competitiveness of agro-processing firms in Uganda while process innovation capabilities and marketing innovation capabilities are not.

Research limitations/implications
A structured questionnaire was used to solicit responses and no follow-up interviews were conducted to inform the reasons behind the respondents’ responses. Nevertheless, the study reveals that agro-processing firms in Uganda should concentrate on building product and organizational innovation capabilities if they are to compete effectively in international markets.

Originality/value
To the authors’ knowledge, this is the first study to investigate the relationship between the four forms of innovation capabilities (product, process, marketing and organizational) and international competitiveness particularly among agro-processing firms from an African country.
Estimation on compressive strength of recycled aggregate self-compacting concrete using interpretable machine learning-based models
Authors: Yang Suhang , Chen Tangrui , Xu Zhifeng 
Published: October 2024

PurposeRecycled aggregate self-compacting concrete (RASCC) has the potential for sustainable resource utilization and has been widely applied. Predicting the compressive strength (CS) of RASCC is challenging due to its complex composite nature and nonlinear behavior.Design/methodology/approachThis study comprehensively evaluated commonly used machine learning (ML) techniques, including artificial neural networks (ANN), random trees (RT), bagging and random forests (RF) for predicting the CS of RASCC. The results indicate that RF and ANN models typically have advantages with higher R2 values, lower root mean square error (RMSE), mean square error (MSE) and mean absolute error (MAE) values.FindingsThe combination of ML and Shapley additive explanation (SHAP) interpretable algorithms provides physical rationality, allowing engineers to adjust the proportion based on parameter analysis to predict and design RASCC. The sensitivity analysis of the ML model indicates that ANN’s interpretation ability is weaker than tree-based algorithms (RT, BG and RF). ML regression technology has high accuracy, good interpretability and great potential for predicting the CS of RASCC.Originality/valueML regression technology has high accuracy, good interpretability and great potential for predicting the CS of RASCC.
Linking organizational cronyism, time theft and nurse’s proactive behavior: an evidence from public sector hospitals of Pakistan
Authors: Khan Muhammad Awais 
Published: October 2024

PurposeThe main objective of this study was to understand why employees engage in time theft behavior and what is the behavioral consequence of this deviant behavior. To do this, the conservation of resources theory helps to examine the role of organizational cronyism behind employee time theft behavior and decreased proactive behavior.Design/methodology/approachA three-wave self-administered employee survey was used for data collection. The data were collected through an adopted questionnaire from nurses working in the public sector hospitals of Pakistan. Structural equation modeling (SEM) was used to analyze data collected from 256 respondents.FindingsThe results of this three-wave study supported the hypotheses which are: (1) Organizational cronyism positively predicts employee involvement in time theft behavior. (2) Employee time theft behavior negatively impacts their proactive behavior. (3) Organizational cronyism is detrimental to employee proactive behavior. (4) The relationship between organizational cronyism and proactive behavior is mediated by time theft.Practical implicationsIn the presence of organizational cronyism, employees use time theft as a dysfunctional coping strategy to conserve their valued resources rather than allowing the organization to consume them. Organizational leaders of public sector hospitals must promote merit-based HRM practices to discourage time theft behavior as well as to improve the proactive performances of the nurses.Originality/valueThis study is one of the initial attempts to extend the scant literature on the antecedents and consequences of time theft behavior and its dimensions in the South Asian context.
Integration of experiential learning and conversational framework in curriculum development – role of 4C’s and student engagement in rural management education
Authors: Seethalakshmi R. , Navaneethakrishnan K. , Rekha K.N. , Wundavalli Gayatri Prasanna Kumar 
Published: October 2024

Purpose
The purpose of the study is to enhance the quality of education in rural management through the inclusion of students’ voices, namely, active participation in the curriculum development intervention. This approach aims to foster critical thinking, collaboration, communication and creativity, thereby enhancing student engagement and in turn leading to quality education.

Design/methodology/approach
This methodology outlines an inductive approach using focus group discussions (FGD) and thematic analysis to explore and understand the constructs related to the impact of students’ voice on quality education. Curriculum development in rural management was used as an intervention to assess the impact of the inclusion of students’ voice. This study’s inductive approach and qualitative methods provide a rich understanding of students’ experiences and perspectives.

Findings
The findings from the FGD and thematic analysis provided insights into the inclusion of students’ voice in rural management curriculum development, an intervention that enhanced the 4C’s (collaboration, communication, creativity and critical thinking) of learning and student engagement. The emerging themes illustrated the intervention’s positive effects on quality education.

Research limitations/implications
This research extends the current knowledge by shedding light on integrating Kolb’s experiential learning theory with Laurillards’ conversational framework in achieving quality education in rural management which has not been extensively explored.

Practical implications
The paper underscores the importance of students’ voice in quality education. It provides a basis for policymakers to mandate that higher education institutions increase student engagement, thereby promoting quality education.

Originality/value
The findings contribute to the existing body of knowledge in the field of quality education (Sustainable Development Goal 4) in rural management. The results of our study provide a novel perspective on the experiential learning of students, which has practical implications and advances the understanding of quality education for sustainable development in business education.
Cooperation mode selection strategies in platform ecosystems: analyzing brand value, cross-selling, and platform empowerment
Authors: Dong Junfeng , Zhang Qiman , Teng Haoyuan , Jiang Li , Lu Wenxing 
Published: October 2024

Purpose
This paper aims to investigate the vertical cooperative relationship between the core enterprise and the manufacturer within the platform ecosystem, specifically analyzing the optimal decision-making processes of both parties under the original equipment manufacturer (OEM) and original brand manufacturer (OBM) modes.

Design/methodology/approach
This paper uses game theory to analyze the problem, considering factors such as brand value difference, cross-selling and platform empowerment. It constructs the game models for both OEM and OBM modes and discusses the selection strategies for the cooperation mode.

Findings
The results indicate that the choice of cooperation mode by the manufacturer and the core enterprise depends on the relative size of their brand values. In cases of inconsistent choices, cooperation can be improved by designing a transfer payment contract. When the brand value is constant, the product price is comprehensively affected by cross-selling revenue, price elasticity coefficient, cost coefficient of sales effort and cost coefficient of platform empowerment. The enterprise reduces the price only when the potential revenue brought by increasing product sales exceeds the marginal profit brought by increasing product pricing; otherwise, it raises the sales price.

Originality/value
The platform ecosystem is emerging as a future direction for business mode development. However, there is a paucity of research on the cooperation modes between manufacturers and core enterprises within the platform ecosystem.
Where is democracy nestled? Reflections on organizational degeneration based on an artists’ cooperative
Authors: Charmettant Herve 
Published: October 2024

PurposeThis article presents a compelling case study of a workers’ cooperative in the cultural sector. It offers a unique opportunity to delve into the tensions between managerial and democratic control, particularly in the context of heightened artistic claims. The pivotal role of an accountant in management for nearly two decades sparks a thought-provoking question about the potential for cooperative degeneration.Design/methodology/approachOur research employs a rigorous qualitative method, utilizing semi-structured interviews of six key members and a comprehensive analysis of legal, accounting and other media documents.FindingsOur findings offer a significant perspective, refuting any indications of organizational degeneration. The decision-making processes continue to uphold democratic principles. While the manager and his administrative staff wield substantial authority, this is justified by their duty to preserve the collective. This duty is executed under democratic control, facilitated by information transparency. The low level of democratic participation poses a challenge, but the manager’s initiatives are aimed at addressing this. The effectiveness of this control, however, relies on the active participation of the members, which acts as a strong deterrent against organizational degeneration.Originality/valueThe originality of our contribution lies in our reference to Chester Barnard whose reflections on industrial democracy have been forgotten, reflections linked to his conception of managerial authority. We also highlight the importance of empowering individual members, which leads them to consider the consequences of their actions. As a result, the manager is not placed in a situation where he has to decide alone, as the scope of his unilateral powers is de facto delimited.