bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cell volume regulates terminal differentiation of cultured human epidermal keratinocytes
Authors: Zijl Sebastiaan , Hiratsuka Toru , Mobasseri Atefeh , Ebrahimkutty Mirsana , Börmel Mandy , Garcia-Manyes Sergi , Watt Fiona M. 
Published: December 2024

AbstractDifferentiation of cultured human epidermal stem cells is regulated by interactions with the underlying substrate. Whereas differentiation is typically stimulated when keratinocytes are prevented from spreading, we previously identified two micron-scale topographical substrates that regulate differentiation of spread cells. On one substrate (S1), individual cells interact with small circular topographies, and differentiation is stimulated; on the other (S2), cells interact with larger triangular topographies, and differentiation is inhibited. By scanning electron microscopy we visualised substrate interactions at higher resolution than previously and using live cell imaging we established that induction of the differentiation marker involucrin did not involve transient cell rounding on S1. Bulk gene expression profiling did not reveal any differences between cells on S1 and S2 prior to the selective upregulation of differentiation markers at 12h on S1 and cell stiffness was lower on both S1 and S2 than on flat substrates. Nevertheless, cells on S2 differed from cells on flat and S1 substrates because they exhibited reduced cell volume, prompting us to explore whether cell volume could regulate differentiation independent of culture substrate. Treatment with polyethylene glycol (PEG) reduced cell volume and inhibited differentiation regardless of whether keratinocytes were seeded on flat, S1 or S2 substrates, micropatterned islands or in suspension. Conversely, treatment with deionised water increased cell volume and stimulated differentiation of substrate adherent keratinocytes. On flat substrates treatment with the Ca2+chelator 1,2-bis-(2-aminophenoxy)ethane-N,N,N’,N’-tetraacetic acid acetoxymethyl ester or an inhibitor of the water channel aquaporin 3 blocked induction of differentiaton by deionised water, whereas the gadolinium3+, a stretch-activated calcium channel blocker, did not. Our studies identify a new mechanism by which keratinocyte-niche interactions regulate initiation of differentiation.
Magnetic ground state and excitations in the mixed
3d−4d
quasi-one-dimensional spin-chain oxide
Sr3NiRhO6
Authors: Jain A. , Adroja D. T. , Rayaprol S. , Hillier A. D. , Kockelmann W. , Yusuf S. M. , Sampathkumaran E. V. 
Published: December 2024

Entanglement of spin and orbital degrees of freedom, via relativistic spin-orbit coupling, in 4d transition metal oxides can give rise to a variety of unique quantum phases. A previous study of mixed 3d−4d quasi-1D spin-chain oxide Sr3NiRhO6 using the magnetization measurements by Mohapatra [] revealed a partially disordered antiferromagnetic structure below 50 K. We here report the magnetic ground state and spin-wave excitations in Sr3NiRhO6 using muon spin rotation and relaxation (μSR), and neutron (elastic and inelastic) scattering techniques. Our neutron diffraction study reveals that in the magnetic structure of Sr3NiRhO6 Rh4+ and Ni2+ spins are aligned ferromagnetically in a spin chain, with moments along the crystallographic c axis. However, spin chains are coupled antiferromanetically in the ab plane. μSR reveals the presence of oscillations in the asymmetry-time spectra below 50 K, supporting the long-range magnetically ordered ground state. Our inelastic neutron scattering study reveals gapped quasi-1D magnetic excitations with a large ratio of gap to exchange interaction. The observed spin-wave spectrum could be well fitted with a ferromagnetic isotropic exchange model (with J=3.7 meV) and single ion anisotropy (D=10 meV) on the Ni2+ site. The magnetic excitations survive up to 85 K, well above the magnetic ordering temperature of ∼50 K, also indicating a quasi-1D nature of the magnetic interactions in Sr3NiRhO6.

Published by the American Physical Society
2024
Casimir energy on the sphere and 6D CFT trace anomaly
Authors: Aros Rodrigo , Bugini Fabrizzio , Diaz Danilo E. , Núñez-Barra Camilo 
Published: December 2024

We elucidate the dependence of the Casimir energy on the trace anomaly coefficients for a six-dimensional (6D) conformal field theory on R×S5. This extends the universal dependence on the central charge in two dimensions and the relation by Cappelli and Coste in four dimensions, unveiling the role of the trivial total derivatives in the anomaly that renders the Casimir energy scheme dependent. We obtain Ec=−158a6−512(g5+14g7+12g8−10g9+g10), with a6 being the type A central charge and the g’s, the coefficients of five out of six terms that form a basis for trivial total derivatives. The derivation is based on the Polyakov formulas (conformal primitive) resulting from the integration of the trace anomaly. Alternatively, on a 6D conformally flat background the above basis is redundant, and one can simplify further to get, in terms of the Schouten scalar J and the Schouten tensor V, Branson’s basis for trivial total derivatives ∇2∇2J, ∇2J2, and ∇2|V|2+2∇·(V·∇J) with coefficients γ1, γ2, and γ3, respectively, Ec=−158a6−124(γ1−γ2−18γ3). For completeness, we also report the energy-momentum tensor in full generality, which leads to an alternative derivation of the above relation.

Published by the American Physical Society
2024
Bulk viscosity, speed of sound, and contact structure at intermediate coupling
Authors: Kushwah Shivam Singh , Misra Aalok 
Published: December 2024

Thermal QCD systems like strongly coupled quark gluon plasma require not only a large ’t Hooft coupling but also a finite gauge coupling [Natsuume, ] in the large-N gravity dual. Unlike almost all top-down holographic models in the literature, holographic large-N thermal QCD models based on this assumption, therefore, necessarily require addressing this limit from M theory. In the context of strongly coupled (very large ’t Hooft coupling) thermal QCD-like theories, the bulk-viscosity(ζ)-to-shear-viscosity(η) ratio using the type-IIA-theory dual of thermal QCD-like theories was shown to vary like 13−cs2 [Czajka , Bulk viscosity at extreme limits: From kinetic theory to strings, ] (cs being the speed of sound), and the same (ζη) at weak coupling using kinetic theory and finite temperature field theory was shown and is known to vary like (13−cs2)2 [Czajka , Bulk viscosity at extreme limits: From kinetic theory to strings, , and references therein]. The novelties of the results of this paper are that we not only show for the first time from M theory that at intermediate coupling, with the inclusion of the O(R4) corrections, the result obtained for ζη interpolates between the strong- and weak-coupling results in a way consistent with lattice computations of SU(3) gluodynamics [Meyer, Calculation of the bulk viscosity in SU(3) gluodynamics, ] within statistical errors (and within the temperature range permissible by our M-theory uplift), but also observe that this behavior is related to the existence of contact 3-structures that exist only at intermediate coupling effected by the intermediate-N “MQGP” limit of Misra and Yadav []. We also obtain an explicit dependence of ζη on (fractional powers of) the temperature-dependent and running gauge coupling (and its temperature derivative) and verify that the weak-coupling result dominates at large temperatures. We further conjecture that the aforementioned fractional-power dependence of ζη on the gauge coupling is related to the lack of “N-connectedness” in the parameter space of contact 3-structures (as shown in ).

Published by the American Physical Society
2024
Observation of an Inverse Turbulent-Wave Cascade in a Driven Quantum Gas
Authors: Karailiev Andrey , Gazo Martin , Gałka Maciej , Eigen Christoph , Satoor Tanish , Hadzibabic Zoran 
Published: December 2024

We observe an inverse turbulent-wave cascade, from small to large length scales, in a driven homogeneous 2D Bose gas. Starting with an equilibrium condensate, we drive the gas isotropically on a length scale much smaller than its size, and observe a nonthermal population of modes with wavelengths larger than the drive one. At long drive times, the gas exhibits a steady nonthermal momentum distribution. At length scales increasing from the drive one to the system size, this distribution features in turn: (i) a power-law spectrum with an exponent close to the analytical result for a particle cascade in weak-wave turbulence, and (ii) a spectrum reminiscent of a nonthermal fixed point associated with universal coarsening in an isolated 2D gas. In further experiments, based on anisotropic driving, we reveal the complete qualitative picture of how the steady-state cascade forms.

Published by the American Physical Society
2024
The AHEAD leadership development program: an illustrative case example in a unique healthcare context
Authors: Cumberland Denise M. , Ellinger Andrea D. , McKinley Tara , Immekus Jason C. , McCart Andrew 
Published: December 2024

Purpose
Leadership development programs (LDPs) have emerged relatively recently in the healthcare context as a mechanism not only to develop capable and competent leaders but also to retain them. The purpose of this paper is to describe a perspective on practice by illustrating a case example that showcases a pilot LDP for newly promoted healthcare leaders. The details about how it was developed and implemented collaboratively by a healthcare consortium and higher education institution (HEI) to address shared healthcare leadership talent pipeline and retention challenges are provided.

Design/methodology/approach
This perspective on practice describes how a consortium of competitive healthcare organizations, a type of branded Inter-organizational Relationship referred to as “Coopetition,” contracted with a HEI to design, develop and launch a pilot LDP, referred to as the Academy for Healthcare Education and Development program, using the analyze, design, develop, implement and evaluate model.

Findings
The significance of this illustrative case example is discussed along with some initial lessons learned based upon this pilot LDP that 24 program participants completed. Implications for research, theory and practice are presented, followed by limitations and a conclusion.

Originality/value
Inter-organizational relationships, particularly coopetition, are relatively new in the healthcare sector, along with collaboration with HEIs to develop interventions to solve compelling industry problems. This illustrative case example offers insights that address scholars’ calls and practitioners’ needs to explicate different approaches for LDPs to build the healthcare leadership talent pipeline.
Project leadership and representation: powering purposive social value
Authors: Clegg Stewart , Skyttermoen Torgeir , Vaagaasar Anne Live 
Published: December 2024

PurposeThe paper discusses sustainability, in terms of creating purposive social value, which is increasingly an inherent characteristic of project leading and doing. Consequently, project scholars are currently grappling with what purposive social value creation means to initiation and execution of projects.Design/methodology/approachIn line with recent development we offer reflections on the empowering nature of leadership enabling social value, its underlying forms of power and the dilemmas involved. Our theorizing is based on recent developments in literature on the value of sustainability in the context of projects, combined with literature on project leadership and reflections on the processes of power.FindingsBased on a process ontology, we suggest that leadership for purposive social value creation calls for a rethinking of leadership as an inclusive patterning of actions, making it relational, boundary spanning and socialized in nature and essentially entailing a politics of representation.Research limitations/implicationsThe paper is conceptual, so it has all the limitations of any conceptual paper that innovates a new field of inquiry. It is a not a hypothetic-deductively structured paper but is abductive in nature, combining disparate literary studies in a conceptual framework for further inquiry.Practical implicationsThe legitimacy of leadership for purposive social value does not reside in the singular formal position of a project leader but in its broader vesting and representation.Social implicationsThe paper calls for a rethinking of the nature of project leadership power relations, processes oriented toward the achievement of purposive social value and representation of interests.Originality/valueThis paper fulfills an identified need to study how purposive social value can be enabled by socialized and distributed project leadership that represents a broad-based and coherent conception of interests.
Appreciation of primary preservice teachers about the potential educational use of citizen science in environmental education
Authors: Diez-Ojeda María , Queiruga-Dios Marián , Queiruga-Dios Miguel Ángel 
Published: December 2024

Purpose
This study aims to determine prior knowledge regarding the term “citizen science” (CS) and evaluate preservice teachers’ appreciation of the educational potential of CS.

Design/methodology/approach
Following the pedagogical framework of Experiential Learning Theory, a training program was designed for the subject of Environmental Education (EE) of the Primary Teacher Degree, incorporating CS activities. A quasi-experimental research was carried out with 36 primary preservice teachers who participated in this study, with a qualitative approach and without a control group. Two ad hoc surveys were defined for this study, the first one is related to prior knowledge about the term CS and a questionnaire was conducted to assess the educational potential of the CS after the implementation of the training program. The results showed a great initial lack of knowledge about CS but the appreciation of the preservice teachers after the educational intervention reveals the advantages and educational potential of CS.

Findings
Preservice teachers consider that CS can and should be incorporated, as part of the course syllabus, into the teaching system and this can be done in scientific-technological subjects or in all subjects with an interdisciplinary and transversal approach, with the majority of responses indicating that the development of generic skills would be the greatest perceived benefit for students.

Originality/value
There has been an increase in CS initiatives and projects in recent decades. However, despite the advantages for the participants and actors involved, its incorporation into higher education curricula is scarce.
Unveiling the mechanisms between project manager leadership competencies and team performance: an empirical study
Authors: Wang Peng , Haron Nuzul Azam , Law Teik Hua , Alias Aidi Hizami , Qi Yuewu 
Published: December 2024

Purpose
This study aims to explore the influence of construction project manager competencies on team performance, using structural equation modeling (SEM) within the framework of social information processing theory. It investigates the multidimensional nature of project manager competencies and their impact on team processes and outcomes. Additionally, the study examines the mediating role of team processes in the relationship between competencies and team performance.

Design/methodology/approach
Drawing on data collected from 483 construction professionals in China, this study uses SEM to analyze the relationships among project manager competencies, team processes and team performance.

Findings
The results demonstrate a significant and positive effect of competencies on team performance. Specifically, task-related competencies directly contribute to performance, while people-related competencies enhance leader-member relations, and self-related competencies exert a gradual, cumulative influence. Moreover, the research confirms a three-factor competency structure and elucidates the nuanced mediating roles of team learning, monitoring and climate in the competency-performance relationship, shedding light on how specific competencies affect different stages of team development.

Originality/value
This study contributes to project management literature by applying social information processing theory to elucidate how project managers influence team cognition through competencies. From a practical standpoint, it advocates for a competency-based approach to project manager selection and training, aiming to enhance team performance. Overall, this research advances the understanding of the intricate interplay between project manager competencies and team performance, using SEM and a theoretical perspective rooted in social information processing theory.
A study of c-suite leaders’ individualistic and collectivistic decision-making styles: elaborating on leaders’ efficacy during crises
Authors: Bansal Anjali , Saini Damini , Yaqub Muhammad Zafar , Gupta Pragya 
Published: December 2024

Purpose
This study investigated leaders’ decision-making during crises. Using grounded theory research, we explored whether leaders’ use of either individualistic or collectivistic decision-making styles is based on the context of a crisis. In addition, the authors looked into the components of building leaders’ efficacy during a crisis event and gauged their attitudinal and behavioral reactions to the crisis.

Design/methodology/approach
The authors conducted interviews with 30 C-suite executives during the first wave of the COVID-19 pandemic to determine their responses to crises. The authors then used open, axial, and selective coding to examine their data, which was then extracted for representative themes and overarching dimensions. In total, The authors received 12 major themes largely summarizing into 6 overarching dimensions – context of decision-making, leaders’ efficacy, individualistic approach to decision-making, collectivistic approach to decision-making, process of decision-making, and outcomes.

Findings
The research presents a decision-making framework clearly bifurcating situations with the need for individualistic and collectivistic decision-making. While, a high level of urgency and scarce resources encouraged leaders to adopt an individualistic approach in which most of the decisions were intuition-based and only high-level stakeholders were involved, the less time urgent and uncertain situation allowed leaders to put significant effort into building their own knowledge systems and involving others. In addition, leaders’ efficacy is understood in terms of their attitudes, readiness and reactions, which further elaborated upon their knowledge systems to allow them to excel in decision-making irrespective of the approaches they chose.

Originality/value
The research has implications for leaders in the decision-making roles to be effective during both individualistic and collectivistic decision-making.
Is the interplay among O2O platform businesses always equal? Evidence of attribute weight changes in the hospitality sector
Authors: Wen Tianhao , Ha Hong-Youl 
Published: December 2024

PurposeA crossover effect exists in the relationship between recommendation apps and restaurants in the online-to-offline (O2O) service platform context. Yet, how this effect evolves across subsequent consumption episodes, from the initial stage of information searching to the final stage of loyalty to a service provider, remains unclear.Design/methodology/approachThis study utilizes a two-time-lag interval approach to test changes in temporal and carryover effects and attribute weights.FindingsWhile there is no crossover effect between restaurant satisfaction and recommendation app loyalty during two time-lag interval periods, the crossover effect between recommendation app satisfaction and restaurant loyalty intentions is significant. These findings indicate that the satisfaction–loyalty intentions linkage operates systematically within the O2O consumption domain and increases over time. Particularly, the initial selection of a restaurant based on an app’s recommendation strengthens the intention to use the app again and increases loyalty toward the restaurant.Originality/valueThis study contributes to the literature by demonstrating the crossover effects of the two consumption systems on consumer evaluations. It underscores the importance of changes in individual attribute weights between the two systems as behavioral responses occur during initial and subsequent consumption phases.
Enhancing digital currency adoption: examining user experiences
Authors: Bhatnagr Puneett 
Published: December 2024

PurposeThis study aimed to analyse user experiences and perceptions of eRupee banking applications in India, focussing on understanding the key factors driving user satisfaction and dissatisfaction.Design/methodology/approachA comprehensive text-mining approach was employed to analyse 5,176 user reviews collected from the Google Play Store. Sentiment analysis and latent Dirichlet allocation (LDA) were used to classify reviews and uncover prevailing themes.FindingsThe analysis revealed that positive reviews highlighted the themes of usefulness, convenience, satisfaction, app attributes, and ease of use. Negative reviews emphasise issues related to lack of trust, faulty updates, unreliability, security concerns, and inadequate customer support. The Logistic Regression model demonstrated superior performance in predicting user sentiments, achieving an AUC of 0.7926 and an accuracy rate of 77.90%.Research limitations/implicationsThis study was limited to reviews from a single-platform source. Future research could incorporate data from multiple online sources and employ qualitative methods to gain deeper insight. Additionally, longitudinal studies and cross-cultural analyses are recommended to capture evolving user sentiments and global perspectives.Practical implicationsThe findings provide actionable insights for bank managers, app developers and policymakers to enhance eRupee applications by addressing identified issues and leveraging positive aspects to improve overall user experience and satisfaction.Originality/valueThis study makes a novel contribution to the literature on digital currency and advanced text-mining techniques using machine-learning models to analyse user feedback in the context of an emerging economy. The proposed conceptual model and practical recommendations serve as the foundation for future research and practical development in digital financial services.