bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cholinergic interneurons of the dorsomedial striatum mediate winner-loser effects on social hierarchy dynamics in male mice
Authors: Hsu Mao-Ting , Akamine Yumiko , Kurima Kiyoto , Tanaka Kazumasa Z. , Wickens Jeffery R. 
Published: December 2024

AbstractCholinergic interneurons of the dorsomedial striatum may play a role in social hierarchy dynamics. A social hierarchy is an organization of individuals by rank that occurs in social animals. Establishing a new social hierarchy involves flexible behavior in deciding whether to be a winner or loser, experience of winning or losing, and stabilization of rank. The neural circuits underlying such flexible behavior have yet to be fully understood, but previous research indicates that cholinergic interneurons in the dorsomedial striatum play a role in behavioral flexibility. We used the dominance tube test to measure ranking within group housed mice, before and after between-cage competitions using the same test. We found that the experience of winning or losing against mice from different cages not only contributes to new social hierarchies among the competitors, but also causally influences the subsequent social hierarchy among their cage mates in the home cage – supporting the hypothesis of winner-loser effects on later social ranking. To test the hypothesis that cholinergic interneurons contribute to social hierarchy dynamics, we made a selective lesion of cholinergic interneurons in the dorsomedial striatum. The lesion did not prevent social hierarchy formation among pairs of similarly ranked individuals from different cages. However, it reduced the loser effect of external competition on the subsequent home-cage rankings in dominant mice. In light of these results we suggest that cholinergic interneurons in dorsomedial striatum increase the flexibility of social hierarchy dynamics.Significance statementThe effect of winning or losing a competition on subsequent ranking in mouse home cage social hierarchies was examined using the dominance tube test. We found that losing, when dominant mice were defeated by equally ranked mice from another cage, led to decreased social rank in their home cage. Conversely, winning by initially subordinate mice led to increased rank in the home cage social hierarchy. The loser effect on subsequent behavior in dominant mice was reduced after selective lesions of the cholinergic interneurons of the dorsomedial striatum. We suggest that losing might produce these effects by altering the activity of cholinergic interneurons, and thus modulating synaptic plasticity in neural circuits involved in flexible decision making and positive reinforcement.
The RNA-binding protein PRRC2B preserves 5’ TOP mRNA during starvation to maintain ribosome biogenesis during nutrient recovery
Authors: Goldberg Nadav , Bril Doron , Eisenstein Miriam , Olender Tsviya , Savidor Alon , Bialik Shani , Pietrokovski Shmuel , Kimchi Adi 
Published: December 2024

AbstractPRRC2B is an intrinsically disordered RNA-binding protein that is part of the cell’s translation machinery. Here we show that PRRC2B has two alternatively spliced mRNA transcripts producing major long and minor short isoforms. Mass spectrometry-based interaction studies indicated that both isoforms associate with the 40S ribosomal subunit and translation initiation factors. Importantly, the long isoform also interacted with additional RNA-binding proteins through its unique Arg/Gly-rich region. Among these is LARP1, a regulator of 5’ terminal oligopyrimidine (TOP) mRNAs under conditions of mTOR inhibition. We discovered that like LARP1, PRRC2B is necessary for preservation of 5’ TOP mRNA levels, particularly those encoding ribosomal proteins, during amino acid starvation. In its absence, the rapidde novotranslation of ribosomal proteins that takes place upon nutrient recovery is impeded. Overall, our study elucidates a newly discovered function for PRRC2B as an RNA-binding protein that regulates ribosomal biogenesis upon metabolic shift, in addition to its established function in initiating translation of specific mRNA targets.
Avian telencephalon and cerebellum volumes can be accurately estimated from digital brain endocasts
Authors: Keirnan Aubrey R. , Cunha Felipe , Citron Sara , Prideaux Gavin , Iwaniuk Andrew N. , Weisbecker Vera 
Published: December 2024

ABSTRACTFor studies of the evolution of vertebrate brain anatomy and potentially associated behaviours, reconstructions of digital brain endocasts from computed tomography scans have revolutionised our capacity to collect neuroanatomical data. However, measurements from digital endocasts must be validated as reflecting actual brain anatomy, which is difficult because the collection of soft tissue information through histology is laborious and time consuming. In birds, the reliability of digital endocast measurements as volume proxies for the two largest brain regions – the telencephalon and cerebellum - remains to be validated despite their use as proxies e.g. of cognitive performance or flight ability. We here use the largest dataset of histology and digital endocasts to date, including 136 species from 25 avian orders, to compare digital endocast surface area measurements with actual brain volumes of the telencephalon, cerebellum, and whole-brain endocast. Using linear and phylogenetically informed regression analyses, we demonstrate that endocast surfaces are strongly correlated with their brain volume counterparts for both absolute and relative size. This provides empirical support for using endocast-derived cerebellar and telencephalic surface areas in existing and future studies of living and extinct birds, with potential to expand to the dinosaur-bird transition in the future.
Extended Quality (eQual): Radial threshold clustering based on n-ary similarity
Authors: Chen Lexin , Smith Micah , Roe Daniel R. , Miranda-Quintana Ramón Alain 
Published: December 2024

AbstractWe are transforming Radial Threshold Clustering (RTC), anO(N2) algorithm, into Extended Quality Clustering, anO(N)algorithm with several novel features. Daura et al’s RTC algorithm is a partitioning clustering algorithm that groups similar frames together based on their similarity to the seed configuration. Two current issues with RTC is that it scales asO(N2) making it inefficient at high frame counts, and the clustering results are dependent on the order of the input frames. To address the first issue, we have increased the speed of the seed selection by usingk-means++ to select the seeds of the available frames. To address the second issue and make the results invariant with respect to frame ordering, whenever there is a tie in the most populated cluster, the densest and most compact cluster is chosen using the extended similarity indices. The new algorithm is able to cluster in linear time and produce more compact and separate clusters.
Counting statistics of ultrabroadband microwave photons
Authors: Bolduc Beaudoin Simon , Pinsolle Edouard , Reulet Bertrand 
Published: December 2024

We report measurements of counting statistics, average and variance, of microwave photons of ill-defined frequency: bichromatic photons, i.e., photons involving two well separated frequencies, and “white” broadband photons. Our setup allows for the analysis of single photonic modes of arbitrary waveform over the 1–10 GHz frequency range. The photon statistics are obtained by on-the-fly numerical calculation from the sampled time-dependent voltage. Using an ac+dc biased tunnel junction as a source of quantum microwave, we report an ultrawide squeezing spectrum representing a competitive source for entanglement generation (up to 0.9 billion measured entangled bits per second) easily achievable experimentally. We also report the observation of quantum steering by the tunnel junction, and show how the presence of squeezing of a broadband mode implies the existence of entanglement between two modes it encompasses.

Published by the American Physical Society
2024
Identifying the determinants of biorefineries location in a core-periphery polarised Europe
Authors: Celi Giuseppe , Sica Edgardo 
Published: December 2024

PurposeThe challenge posed by the new European bioeconomy strategy in support of green transition goals is significant and raises serious questions regarding its sustainability, from socio-economic, territorial and ecological perspectives. Such a strategy is indeed being implemented in a Europe divided between economically strong and weak areas and where regional divergences within countries have increased nearly everywhere. Considering this polarised context, the present paper investigates the determinants of biorefinery presence in Europe, adopting a core-periphery perspective.Design/methodology/approachSpatial analysis is employed to identify core and periphery regions at the NUTS2 level, and econometric estimates show that the factors determining biorefinery implementation differ between these regions.FindingsIn the core regions, socio-economic factors (e.g. higher income, education and social acceptability) are most significant, while in the periphery, agricultural and territorial determinants play a more prominent role. However, the differences between regions are mitigated when the sample is narrowed to focus on biorefineries with the greatest technological readiness.Originality/valueTo the best of our knowledge, the determinants of biorefineries' presence in a territory is an under-explored topic. Moreover, the existence of core-periphery dynamics even within bio-based activities raises important questions and policy implications in ecological transition processes in Europe.
Text mining in tourism and hospitality research: a bibliometric perspective
Authors: Lekmiti Amine , Stolk Paul John , Taylor Alex , Ramachandran Sridar , Yap Ng Keng 
Published: December 2024

Purpose
The purpose of this study is to assess the current level of knowledge on the application of text mining in tourism and hospitality (T&H) research and provide a novel comprehensive framework for the field. This study also identifies gaps and proposes future research directions.

Design/methodology/approach
This bibliometric study analyzes 814 journal articles, sourced from Scopus between 2004 and 2024, and uses performance analysis and science mapping using Biblioshiny and VOSviewer software.

Findings
Over 50% of the articles were published between 2022 and 2024, reflecting a surge in text-mining applications in T&H research. These studies primarily focus on topics such as customer satisfaction, sustainability, destination image and COVID-19 effects, with sentiment analysis and topic modeling being the predominant techniques. The primary data sources are online reviews and microblogs. The review also highlights recent research trends (e.g. long–short-term memory, support vector machines and crisis) and classifies them into four conceptual categories concerning the application of text mining in T&H research: How? Where? Why? When?

Originality/value
This study comprehensively explores the evolution of T&H, contributions from research constituents and the intellectual structure of the field, providing a novel comprehensive framework while also assessing the field and highlighting its challenges.
Investigating the antecedents of tourists’ intention to use travel tracking mobile applications to follow other travelers’ experiences
Authors: Medeiros Marcos , Ozturk Ahmet Bulent , Okumus Bendegul , Hancer Murat , Weinland Jeffrey 
Published: December 2024

Purpose
The purpose of this study is to propose and test a theoretical model investigating factors that influence travelers’ intention to use travel-related information shared by other travelers through a novel category of travel-focused mobile applications, referred to as travel-tracking mobile applications (TTMAs).

Design/methodology/approach
Data collected from mobile app users who traveled for leisure purposes were used to test an extended version of the Unified Theory of Acceptance and Use of Technology 2, adding trust and privacy concerns as new constructs to the existing framework.

Findings
The current study found empirical and significant evidence that performance expectancy, effort expectancy, hedonic motivation and trust positively; and system privacy negatively influenced travelers’ intention to adopt TTMA to follow other travelers’ experiences.

Research limitations/implications
Limitations and directions for future research are widely explored in the final section of this study.

Practical implications
Practical implications for tourism, travel and hospitality technology companies, TTMA developers and entrepreneurs of travel-related and/or location-based mobile applications are discussed following the empirical findings of this study.

Originality/value
The current study findings add to the body of knowledge in the field of travel technology acceptance, and provide practical implications, especially for entrepreneurs and tourism technology vendors.
The influence and configuration effect of content characteristics on customer input in the context of short video platforms
Authors: Zhang Jieli , Li Chunqing 
Published: December 2024

PurposeThis study focuses on the influence of content characteristics on customer input on short video platforms (CISVP) and the mediating role of groundedness, fun and customer inspiration as well as the asymmetric relationships among these variables.Design/methodology/approachThis study used structural equation modeling (SEM) to test the research model. Then, fuzzy set qualitative comparative analysis (fsQCA) was conducted to test the asymmetric relationships.FindingsSEM shows that content originality and relevance have a direct positive effect on CISVP. Groundedness and customer inspiration partially mediate the relationship between content relevance and CISVP, and customer inspiration also partially mediate the relationship between content originality and CISVP. However, the mediating effect of fun is not significant. FsQCA reveals three configurations for high levels of CISVP. Some fsQCA results align with the SEM results but also offer additional interesting findings.Originality/valueThis study makes an important contribution to the literature on interactive marketing, short video marketing and content marketing. It also contributes to the theory of groundedness, customer inspiration and fun. Furthermore, this study has implications for individual influencers, organizational actors and platforms to encourage more CISVP.
Celebrity leaders and corporate greenwashing
Authors: Cao Tiantian , Li Weian , Zhang Yaowei , Chen Xingye 
Published: December 2024

PurposeThis study aims to elucidate the causal relationship between corporate greenwashing and celebrity leaders.Design/methodology/approachThis study considers winning the National Model Worker Award as an external shock for producing celebrity leaders and conducts a difference-in-difference (DID) estimation with listed companies from 2009 to 2022 in the Chinese context.FindingsThe findings indicate an increase in greenwashing of companies with celebrity leaders in the post-award period. Stakeholder pressure can moderate the effect of celebrity leaders on corporate greenwashing.Originality/valueThis study enriches the research on the antecedents of greenwashing and the impacts of celebrity leaders. The findings advance the understanding of the real effect of celebrity leaders on environmental, social and governance (ESG) efforts and provide new insights into how celebrities respond to legitimacy pressures.
US sanctions and the reshaping of Chinese innovation strategies
Authors: Li Jianlan , Wang Yuzhi , Zeng Wang , Liang Kaibo 
Published: December 2024

PurposeAs the China–US trade tensions escalate, the implementation of US sanctions has imposed severe restrictions on the innovation resources of Chinese firms. This study introduces the theory of peer effect to investigate whether US sanctions stimulate a homogenization of innovation strategies among Chinese companies in the same industry, thereby giving rise to an innovation peer effect.Design/methodology/approachThis study utilizes a sample of 4,078 A-share listed companies from 2015 to 2021 and employs a multi-period difference-in-differences (DID) model for analysis.FindingsThe findings indicate that US sanctions significantly stimulate innovation inputs among companies in the same industry, but concurrently, they suppress innovation outputs. Moreover, a higher degree of internationalization weakens the promotion of innovation inputs by US sanctions and amplifies the inhibitory effect on innovation outputs. A high proportion of long-term loans offsets the negative impact on innovation outputs, whereas a high proportion of short-term loans diminishes the positive impact on innovation inputs.Research limitations/implicationsThis study elucidates how external shocks impact companies’ innovation capabilities within the same industry, offering a fresh perspective on understanding the influence of China–US trade tensions on innovation among Chinese firms.Practical implicationsChinese firms should view US sanctions-induced technological challenges as opportunities, fostering breakthrough innovations through industry-academia collaboration. Balancing risk and reward is also key when navigating technological innovation and global strategies.Originality/valueThis study comprehensively reflects the impact of the US sanctions on Chinese firm innovation. It lays the foundation for analyzing the transmission mechanism of other trade policies under the framework of trade friction theory.
Professional directors (retired directors) and investment efficiency
Authors: Shiah-Hou Shin-Rong , Zhong Min-Hong 
Published: December 2024

PurposeThis study examines the role of “Professional Directors” and their association with the quality of monitoring outcomes proxied by investment efficiency. “Professional Directors” are board members with no employment outside of serving as independent directors.Design/methodology/approachWe collect data on directors on the board at the fiscal year-end from BoardEx from 2001 to 2019 with a sample of US publicly listed firms. We follow Richardson (2006) to measure the magnitude of abnormal investment, including overinvestment and underinvestment and use these to define investment efficiency.FindingsWe find professional directors improve investing efficiency, primarily by reducing overinvestment. Professional directors may generate higher monitoring quality through their financial expertise and CEO experience, making them effective in monitoring investment efficiency.Practical implicationsOur study suggests that a professional board enhances monitoring and advising effectiveness in the face of significant regulatory pressure to increase board diversity.Originality/valueWe use two perspectives: (1) the difference in the proxy variables of monitoring effectiveness and (2) the influence of the background of professional directors, to reasonably explain this challenge. We resolve the puzzle of the inconsistent evidence on the effectiveness of professional directors in the literature.
The double-edged sword: how cryptocurrency investments could undermine the anxiety-reducing benefits of rainy-day savings in times of economic turbulence
Authors: Bai Zefeng 
Published: December 2024

PurposeRainy-day savings have been an effective measure for maintaining financial stability in times of emergency. Motivated by the rapid expansion of cryptocurrencies, the present study examines how crypto investments could moderate the beneficial outcomes of rainy-day savings for alleviating financial anxiety during the most recent economic turbulence caused by the COVID-19 pandemic.Design/methodology/approachThe present study carries out multivariate logistic regression with interaction effects on the most recent 2021 cohort data from the National Financial Capability Study (NFCS).FindingsWhile rainy-day savings relate to less financial anxiety, the effect varies depending on whether an individual has invested in cryptocurrencies. Specifically, this paper finds that crypto investors experience less relief in financial anxiety from rainy-day savings than non-crypto investors. Additionally, crypto investors are more susceptible to financial stressors like job loss and financial fragility, likely due to the financial loss from investing in cryptocurrencies.Practical implicationsThe findings highlight the necessity of implementing policies and regulations, such as the newly approved Markets in Crypto-Assets (MiCA) regulation, that could raise people’s awareness of the high-risk nature of cryptocurrencies as well as offering targeted financial education for crypto investors, especially during times of market downturn.Originality/valueThis is the first attempt to study how crypto investments may weaken the benefits of rainy-day savings in reducing financial anxiety. The findings offer new insights into the beneficial outcomes of rainy-day savings for emergencies in light of individual crypto investment backgrounds. Additionally, findings from the present study also contain important implications given the rapid expansion of the cryptocurrency market as well as future economic turbulence.
Species‐specific root–shoot ratios in a diverse grassland community
Authors: Krak Karol , Balšánková Tereza , Šemberová Kristýna , Hadincová Věroslava , Pecháčková Sylvie , Skálová Hana , Herben Tomáš 
Published: December 2024

Abstract

Existing studies of root/shoot ratios (R/S) in the field show large differences among environments, from high values in unproductive environments to low values in productive environments. However, virtually, all such studies are community‐wide, that is compare biomasses of roots and shoots summed over all coexisting species. Therefore, we do not know to what extent this is due to innate interspecific differences in the R/S ratios or to plastic response to nutrient limitations. This is due to methodological difficulties in assigning roots into species, which preclude the contribution of species‐specific differences to the community‐wide R/S ratio.

These limitations can be overcome by DNA analyses. We used qPCR to determine species‐specific R/S ratios in a montane grassland and compared these values to R/S ratios from a two‐season long single‐species pot experiment. To translate the qPCR data to root biomass units, we extracted DNA from the experimental plants to perform calibration for each species and to take into account potential change during the ontogeny of root systems. We used these calibration relationships to recalculate gene copies estimated in a set of field samples to species‐specific root biomass values.

All species except one showed fairly high correlation between above‐ground biomass (determined by weighing) and below‐ground biomass (determined by qPCR) across all studied plots in the field. Root/shoot ratios determined from the field were for most species slightly lower than the aggregate values of the whole community determined by weighing both roots and above‐ground biomass. They showed significant correlation with the R/S ratios from the pot experiment, indicating innate differences among species that persist across two very different sets of conditions (multispecies community in the field, single species culture in pots).

The field R/S ratios based on qPCR root estimation are informative on the true field patterns. This is supported by their correlation with the pot‐derived values. While the values seem to be slightly underestimated, they are well in the reasonable range of values. This opens a new field of study, namely examination how R/S ratios in the field respond to changed nutrient availability and diversity and species composition of neighbouring species.

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