bluuebunny/crossref_metadata_2025_split huggingface dataset:
The stretch-shortening cycle effect is not associated with cortical or spinal excitability modulations
Authors: Rissmann Lea-Fedia , Raiteri Brent James , Seiberl Wolfgang , Siebert Tobias , Hahn Daniel 
Published: August 2024

AbstractIt is unclear whether cortical and spinal excitability modulations contribute to enhanced SSC performance. Therefore, this study investigated cortical and spinal excitability modulations during and following shortening of stretch-shortening cycle (SSC) contractions compared with pure shortening (SHO) contractions. Participants (N = 18) performed submaximal voluntary plantar flexion contractions while prone on the dynamometer bench. The right foot was strapped onto the dynamometer’s footplate attachment and the resultant ankle joint torque and crank arm angle were recorded. Cortical and spinal excitability modulations of the soleus muscle were analyzed by eliciting compound muscle actional potentials via electrical nerve stimulation, cervicomedullary motor-evoked potentials (CMEPs) via electrical stimulation of the spinal cord, and motor-evoked potentials (MEPs) via magnetic stimulation of the motor cortex. Mean torque following stretch was significantly increased by 7±3% (p=0.029) compared with the fixed-end reference (REF) contraction and mean torque during shortening of SSC compared with SHO was significantly increased by 12±24% (p=0.046). Mean steady-state torque was significantly lower by 13±3% (p=0.006) and 9±12% (p=0.011) following SSC compared with REF and SHO, respectively. Mean steady-state torque was not significantly lower following SHO compared with REF (7±8%, p=0.456). CMEPs and MEPs were also not significantly different during shortening of SSC compared with SHO (p≥0.885) or during the steady state of SSC, SHO, and REF (p≥0.727). Therefore, our results indicate that SSC performance was not associated with cortical or spinal excitability modulations during or after shortening, but rather driven by mechanical mechanisms triggered during active stretch.Key pointsA stretch-shortening cycle (SSC) effect of 12% was observed during EMG-matched submaximal voluntary contractions of the human plantar flexorsThe SSC effect was neither associated with cortical or spinal excitability modulations nor with stretch-reflex activityThe SSC effect was likely driven by mechanical mechanisms related to active muscle stretch, which have long-lasting effects during shorteningResidual force depression following SSC was not attenuated by the long-lasting mechanical mechanisms triggered during active muscle stretchSteady-state torques were lower following shortening of SSCs versus pure shortening and fixed-end contractions at the same final ankle joint angle, but the torque differences were not correlated with cortical or spinal excitability modulations
Neural Mechanisms of Feedback Processing and Regulation Recalibration during Neurofeedback Training
Authors: Pamplona Gustavo S. P. , Zweerings Jana , Lor Cindy S. , deErney Lindsay , Roecher Erik , Taebi Arezoo , Hellrung Lydia , Amano Kaoru , Scheinost Dustin , Krause Florian , Rosenberg Monica D. , Ionta Silvio , Brem Silvia , Hermans Erno J. , Mathiak Klaus , Scharnowski Frank 
Published: August 2024

AbstractThe acquisition of new skills is facilitated by providing individuals with feedback that reflects their performance. This process creates a closed loop that involves feedback processing and regulation recalibration to promote effective training. Functional magnetic resonance imaging (fMRI)-based neurofeedback is unique in applying this principle by delivering direct feedback on the self-regulation of brain activity. Understanding how feedback-driven learning occurs requires examining how feedback is evaluated and how regulation adjusts in response to feedback signals. In this pre-registered mega-analysis, we re-analyzed data from eight intermittent fMRI neurofeedback studies (N = 153 individuals) to investigate brain regions where activity and connectivity are linked to feedback processing and regulation recalibration (i.e., regulation after feedback) during training. We harmonized feedback scores presented during training in these studies and computed their linear associations with brain activity and connectivity using parametric general linear model analyses. We observed that, during feedback processing, feedback scores were positively associated with (1) activity in the reward system, dorsal attention network, default mode network, and cerebellum; and with (2) reward system-related connectivity within the salience network. During regulation recalibration, no significant associations were observed between feedback scores and either activity or associative learning-related connectivity. Our results suggest that neurofeedback is processed in the reward system, supporting the theory that reinforcement learning shapes this form of brain training. In addition, the involvement of large-scale networks in feedback processing, continuously transitioning between evaluating external feedback and internally assessing the adopted cognitive state, suggests that higher-level processing is integral to this type of learning. Our findings highlight the pivotal role of performance-related feedback as a driving force in learning, potentially extending beyond neurofeedback training to other feedback-based processes.Key PointsWe conducted a pre-registered mega-analysis integrating data from eight fMRI neurofeedback studies to examine feedback processing and regulation recalibration during neurofeedback training.During feedback processing, feedback was associated with activity in the reward system, dorsal attention network, default mode network, and cerebellum; as well as with reward system-related connectivity within the salience network.We found no positive results during regulation blocks; however, additional analyses suggest that recalibration may have already occurred during feedback presentation.
One-Pot Dual Protein Labelling for Simultaneous Mechanical and Fluorescent Readouts in Optical Tweezers
Authors: Silbermann Laura-Marie , Fottner Maximilian , Migdad Nora , Lang Kathrin , Tych Katarzyna (Kasia) 
Published: August 2024

AbstractOptical tweezers are widely used in the study of biological macromolecules but are limited by their one-directional probing capability, potentially missing critical conformational changes. Combining fluorescence microscopy with optical tweezers, employing Förster resonance energy transfer (FRET) pairs, addresses this issue. Moreover, attaching one FRET probe to a tethered protein and the other to a protein in solution allows precise localisation of interaction sites, while probing mechanical properties. When integrating fluorescence microscopy with optical tweezers, orthogonal protein conjugation methods are needed to enable simultaneous, site-specific attachment of fluorophores and DNA handles, commonly used to apply force to molecules of interest. In this study, we utilized commercially available reagents for dual site-specific labelling of the homodimeric heat shock protein 90 (Hsp90) using thiol-maleimide and inverse electron demand Diels–Alder cycloaddition (IEDDAC) bioorthogonal reactions. In a one-pot approach, Hsp90 modified with a cysteine mutation and the non-canonical amino acid cyclopropene-L-lysine (CpK) was labelled with the FRET pair maleimide-Atto550 and maleimide-Atto647N, alongside single- stranded methyltetrazine-modified DNA oligonucleotide. Optical tweezers experiments with this labelled Hsp90 construct revealed structural transitions consistent with previous studies, validating the approach. Fluorescence measurements confirmed the proximity of FRET pairs in the N-terminally closed state of Hsp90 in this experimental setup. This integrative method provides a powerful tool for probing protein conformational dynamics and protein interactions beyond the limitations of traditional optical tweezers.StatementThe developed method combines fluorescence microscopy with optical tweezers, enhancing single-molecule protein studies by overcoming the limitations of one- directional mechanical probing. Utilizing two orthogonal protein conjugation methods for one-pot dual labelling, the heat shock protein 90 was labelled with a FRET pair and single-stranded DNA oligonucleotides. Validated by comparison with published conformational changes, mechanical unfolding signatures, and FRET pair distances, this approach provides a powerful tool to explore single-molecule conformational dynamics and protein interactions.
Demonstration of a tunable interface between Rydberg atoms and superconducting microwave circuits with differential polarizability nulling
Authors: Brown L. L. , Grondin J. A. L. , Hogan S. D. 
Published: August 2024

Microwave-dressed Rydberg atoms in pairs of states that are optically accessible and engineered so that the frequency of the transition between them is tunable while exhibiting a low sensitivity to stray electric fields have been interfaced with a superconducting coplanar waveguide (CPW) microwave resonator. This was achieved with helium atoms in triplet Rydberg states with principal quantum numbers n=55 and 56. The atoms were dressed with two strong microwave fields—a control field and a differential polarizability nulling field. The control field allowed the atoms to be coupled to the resonator using the two-color two-photon transition between the equal parity 1s55sS13≡|55s〉 and 1s56sS13≡|56s〉 Rydberg states, with one photon supplied by it and the other provided by the resonator. The nulling field was detuned from the field-free 1s55sS13→1s55pPJ3≡|55p〉 transition to admix |55p〉 character into the |55s〉 state and eliminate the differential static electric dipole polarizability of the |55s〉 and |56s〉 states. The experiments were performed with atoms located ∼300µm above a λ/4 niobium nitride superconducting CPW resonator operated at temperatures between 3.59 and 3.73K. The measured ac and dc Stark shifts of the Rydberg states at this atom-circuit interface in the presence of the dressing fields are in good quantitative agreement with the results of Floquet calculations. The differential polarizability nulling fields used in the experiments allowed the difference in the Stark shifts of the |55s〉 and |56s〉 states over the range of dc fields offset from the residual stray field by ±65 mV/cm to be reduced from 2π×2.1 MHz to 2π×125 kHz.

Published by the American Physical Society
2024
Post-conflict marketing: the role of former conflict stakeholder on post-conflict product/service valuation across countries
Authors: Rodriguez Brayan , Reinoso-Carvalho Felipe , Motoki Kosuke , Velasco Carlos 
Published: August 2024

PurposeThis research examined the role of post-conflict marketing in supporting businesses within conflict-affected regions, aligning with the objectives of UN Sustainable Development Goal 16 to foster peaceful societies amid increasing global conflicts.Design/methodology/approachDrawing from the theories of social egalitarianism and consumer discrimination, the study explored the moderating influence of conflict stakeholder on consumer willingness to pay (WTP). Understanding such stakeholder roles underscores post-conflict marketing's potential for economic growth and stability. Two experiments assessed the WTP, WTP a premium price and expected attractiveness of strategic products and services developed by key stakeholders (ex-guerrilla, ex-paramilitaries, ex-militaries, victims and other citizens) in the Colombian post-conflict context among both local (Colombian) and foreign (Japanese) consumers.FindingsResults revealed that products associated with victims consistently received higher ratings. A notable contrast emerged as Japanese consumers favoured products of victims over those of regular citizens while rating offerings from ex-paramilitary and retired military stakeholders similarly, unlike their Colombian counterparts.Research limitations/implicationsThe study acknowledges limitations regarding participants' geographic location and experimental design, providing insights for future research and potential refinements.Practical implicationsThe findings offer insights into the impact of consumer attitudes on post-conflict stakeholder entrepreneurship in foreign and local markets, thus contributing relevant knowledge to support market success.Originality/valueThis is the first study assessing the role of various post-conflict stakeholders in influencing consumer evaluations of products and services. Consequently, these findings contribute to the foundational understanding of post-conflict marketing and offer a benchmark for business development in conflict-affected areas.
Research on the correlation between the degree of digitization of manufacturing process links and economic benefits
Authors: Wang Heyong , Gu Long , Hong Ming 
Published: August 2024

PurposeThis paper aims to provide a reference for the development of digital transformation from the perspective of manufacturing process links.Design/methodology/approachThis paper applies canonical correlation analysis based on digital technology patents in the key links of manufacturing industries (product design, procurement, product manufacturing, warehousing and transportation, and wholesale and retail) and the related indicators of economic benefits of regions in China.Findings(1) The degree of digitalization of manufacturing process links is significantly correlated with economic benefits. (2) The improvement of the degree of digitalization in the “product design” link, the “warehousing and transportation” link, the “product manufacturing” link and the “wholesale and retail” link has significant impacts on the economic benefits of manufacturing industry. (3) The digital degree of the “procurement” link has no obvious influence on the economic benefits of manufacturing industry.Practical implicationsThe research results can provide reference for the formulation and implementation of micro policies. The strategy of improving the level of digital transformation of key links of manufacturing industry is put forward to better promote both the digital transformation of manufacturing industry and economic development.Originality/valueThis paper innovatively studies the relationship between digitalization of manufacturing process links and economic benefits. The findings can provide theoretical and empirical support for the digital transformation of China's manufacturing industry and high-quality development of economy.
The roles of entrepreneurial orientation and government support in the open innovation of manufacturing firms: empirical evidence from South Korea
Authors: Yoon Jungwon , Oh Soo Jung 
Published: August 2024

PurposeThis study investigates the effect of entrepreneurial orientation and government support on the innovation openness of South Korean manufacturing firms. By compartmentalizing entrepreneurial orientation and government support, this study seeks to elucidate their effects on the breadth and depth of firms' knowledge searches.Design/methodology/approachThe study utilizes Poisson regression analysis with empirical data from 2,353 South Korean manufacturing firms collected from Korean Innovation Survey data.FindingsAnalysis reveals nuanced influences of various factors on firms' open innovation activities. Innovativeness positively affects knowledge search breadth and depth, highlighting the role of innovation-oriented processes, while competitive aggressiveness influences depth, thereby underscoring the pursuit of specialized knowledge acquisition. Proactiveness positively affects breadth but negatively affects depth, suggesting the importance of maintaining broad perspectives. Government support scope positively affects both breadth and depth, reflecting the significance of external support in encouraging inclusive knowledge exploration. The importance of government support positively influences depth, emphasizing its vital role in establishing collaborative relationships to enhance in-depth knowledge acquisition.Originality/valueThis study provides novel insights by exploring the nuanced implementation of open innovation in latecomer economies, especially South Korea, which experienced rapid economic development by leveraging innovation. The identification of specific factors influencing knowledge search breadth and depth contributes to the literature on open innovation by providing strategic guidelines for firms and policymakers. This practical implications of this study suggest that firms should align their strategies with entrepreneurial orientation while leveraging pertinent government support.
A social identity perspective on language and researchers’ cultural identities in qualitative interviews in multinational corporations
Authors: Xian Huiping , He Yingying , Huang Fanke , Latreille Paul 
Published: August 2024

Purpose
This study aims to advance knowledge in international management research about how researchers’ cultural identity in fieldwork encounters may be grounded in the choice of language in multicultural and multilingual projects.

Design/methodology/approach
The study is based on critical reflections on the experience of two co-authors as Chinese nationals conducting research in overseas Chinese multinational corporations (MNCs) in developing economies.

Findings
Drawing on social identity theory, the authors demonstrate that the cultural identity and cultural insider/outsider positionality of both the researcher and research participants can be shaped by language, translation and other artefacts in cross-cultural interviews, constantly being shifted, managed and renegotiated during qualitative interviewing. This study highlights the politics of language which, when combined with other forms of power relations, such as the researcher’s perceived status, economic development of the MNCs’ home country and the participants’ organisational hierarchy, affect power distribution between the researcher and participants. Researchers often need to move from being an “insider” to an “outsider” and often to an “in-betweener” at different stages in an interview interaction to balance power.

Originality/value
This study contributes to international debates about the complex interplay of languages, politics and identity in multilingual and multicultural qualitative research. In contributing to these literatures, the authors focus on the relatively under-researched Chinese MNCs in other developing countries including Mongolia and Tanzania. Recommendations for researcher training and reflexivity are proposed.
Academic motivations and the risk of not in employment, education or training: university and vocational college undergraduates comparison
Authors: Cheng Wen , Nguyen Pham Ngoc Thien 
Published: August 2024

PurposeThis study aims to investigate the relationship between academic motivations and the risk of Not in Employment, Education or Training (NEET) among university undergraduates and Vocational Education and Training (VET) undergraduates.Design/methodology/approachThe sample included 402 Vietnamese university undergraduates and 250 VET undergraduates in the southern region of Vietnam. Students took part in a survey, with all participants being informed about the study’s purpose and assured that their involvement was entirely voluntary. In addition to descriptive statistics, the study employed linear regression in SPSS to examine hypotheses.FindingsThe findings indicate that, for university students, intrinsic motivation and mastery approach motivation are associated with reduced NEET risk, while performance avoidance motivation is positively linked to this tendency. In contrast, for VET students, extrinsic motivation and performance approach motivation are negatively associated with NEET risk, but mastery approach motivation may exacerbate the risk.Originality/valueGrounded in the principles of Self-Determination Theory (SDT) and Achievement Goal Theory (AGT), the study proposes that university students may prioritize competence improvement, knowledge acquisition and the satisfaction of their learning interests, which they believe will help them acquire valuable knowledge beneficial for their future careers. Conversely, VET students emphasize performance and external achievement, which may enhance their outcome and reduce NEET risk. These findings offer significant theoretical and practical insights into the adoption of SDT and AGT and also provide educators or policymakers with more detailed information regarding university and VET students’ learning and development.
Exploring the resource mobilization process in social enterprises in China: a bricolage and social exchange perspective
Authors: Li Xiaoqing , Sarpong David 
Published: August 2024

PurposeResource mobilization has come to dominate contemporary discourse on the making and survival of social enterprises (SEs). Emphasizing the socially constructed nature of idiosyncratic firm resource environments, this study integrates bricolage and social exchange theory to explore the means at hand and the kinds of practices SEs in China employ to mobilize resources to address persistent social problems.Design/methodology/approachAdopting a qualitative multiple case design, the research contribution is developed in the context of four SEs based in two cities in China selected through a two-stage process. The main data for the inquiry come from 21 face-to-face, semi-structured interviews conducted with key informants in 2018 and 2019. The authors supplemented this with secondary data about each SE curated from social media platforms and publicly available documentary sources, including press statements, reports and popular press video interviews.FindingsThe research findings suggest that SEs in China tend to follow a two-step resource mobilization process: fraternize and exchange. Leveraging the means at hand – “social practice know-how” and the practice of “proactiveness,” SEs strategically engage with actors in their environment (fraternize) to understand and explore the possible sources of the resources they require. Nevertheless, fraternization alone is not sufficient; SEs must demonstrate exchange values (social, economic, functional and regulatory) to convince resource owners to either directly release resources (funds, the right of use of empty spaces, technologies, time and efforts) or offer them indirect support (certification, government procurement). The process of fraternizing within the contingencies of organizing, intertwined with social exchange practices, constitutes the success of resource mobilization. The combination and reconfiguration of the expanded repertoire of mobilized resources provide opportunities for the SEs to make do and, in return, help them maintain their status as valued SEs in China.Originality/valueThis study extends the understanding of bricolage through a social exchange lens to unpack the process through which SEs in China mobilize appropriate resources for their businesses. Emphasizing the importance of the social dimension of bricolage in resource mobilization, a two-step model, comprising fraternization exhibited in the form of social practice know-how and proactiveness and social exchange, is presented as an essential mechanism in SEs’ resource mobilization in China.