bluuebunny/crossref_metadata_2025_split huggingface dataset:
Open charm tetraquarks in broken
SU(3)F
symmetry
Authors: Maiani L. , Polosa A. D. , Riquer V. 
Published: August 2024

Prompted by a recent lattice QCD calculation, we review the SU(3) light quark flavor structure of charmed tetraquarks with spin 0 diquarks. Fermi statistics forces the three light quarks to be in the representation 3¯⊗3¯=3⊕6¯. This agrees with the weak repulsion in the 15 of the 3⊗8 in D¯K scattering studied on the lattice. We analyze the 3⊕6¯ multiplet broken by the strange quark mass and determine the five independent masses from the known masses of diquarks. The mass of Ds0*(2317) is predicted within 50 MeV accuracy. The recently observed D¯s−−(2900) and D¯s0(2900), likely part of a I=1 multiplet, with flavor composition c¯q¯q′s, and X0(2900), an isosinglet with flavor composition c¯s¯ud, fit naturally in a 3⊕6¯ structure as the first radial excitations. We discuss also the decay modes of Ds0*(2317), of the radial excitations and of the predicted particles.

Published by the American Physical Society
2024
Reviving MeV-GeV indirect detection with inelastic dark matter
Authors: Berlin Asher , Krnjaic Gordan , Pinetti Elena 
Published: August 2024

Thermal relic dark matter below ∼10  GeV is excluded by cosmic microwave background data if its annihilation to visible particles is unsuppressed near the epoch of recombination. Usual model-building measures to avoid this bound involve kinematically suppressing the annihilation rate in the low-velocity limit, thereby yielding dim prospects for indirect detection signatures at late times. In this work, we investigate a class of cosmologically viable sub-GeV thermal relics with late-time annihilation rates that are detectable with existing and proposed telescopes across a wide range of parameter space. We study a representative model of inelastic dark matter featuring a stable state χ1 and a slightly heavier excited state χ2 whose abundance is thermally depleted before recombination. Since the kinetic energy of dark matter in the Milky Way is much larger than it is during recombination, χ1χ1→χ2χ2 upscattering can efficiently regenerate a cosmologically long-lived Galactic population of χ2, whose subsequent coannihilations with χ1 give rise to observable gamma-rays in the ∼1  MeV−100  MeV energy range. We find that proposed MeV gamma-ray telescopes, such as e-ASTROGAM, AMEGO, and MAST, would be sensitive to much of the thermal relic parameter space in this class of models and thereby enable both discovery and model discrimination in the event of a signal at accelerator or direct detection experiments.

Published by the American Physical Society
2024
Integrated BIM-GA approach for slab formwork design optimization
Authors: Allam Alaa , Elbeltagi Emad , Abouelsaad Mohamed Naguib , E. El Madawy Mohamed 
Published: August 2024

Purpose
Formwork design and construction for reinforced concrete buildings take significant time, effort and money. Construction procedures are time-consuming for designers and costly for the contractor. Poor engineering decisions have led to several workplace accidents in the construction industry. This paper aims to present an integrated building information modeling – genetic algorithm (BIM-GA) model to automate formwork design, 3D visualization and optimization.

Design/methodology/approach
Data are precisely extracted from a 3D structural model and used to optimize formwork design based on available formwork components and prices. Optimization models are made using GA approach. A library of 3D formwork components was modeled and stored using Revit. The optimized design solution thereafter would be visualized automatically in Revit to readily acquire formwork quantities schedules and shop drawings.

Findings
A case study illustrating the proposed approach demonstrated that using BIM will reduce formwork design, quantification and drawing time by more than 50% of the traditional approach with safer design and accurate results due to process automation and optimize cost for the given data.

Originality/value
This research introduces an innovative integrated BIM and GA model for the optimization and automation of slab formwork design, which has significantly benefited the construction industry. The utilization of GA in the optimization process allows for the attainment of an optimal formwork design, ultimately leading to a reduction in construction cost and time.
Undergraduates’ experiences with library portal services: perceptions of usefulness and satisfaction
Authors: Ajisebutu Adenike Elizabeth , Adetayo Adebowale Jeremy , Alawiye Mariam Kehinde , Makinde Bosede Olufunmilayo 
Published: August 2024

Purpose
The purpose of this study is to evaluate the perceived usefulness and satisfaction levels of undergraduate students with respect to university library portal services, specifically within selected universities in South-West Nigeria.

Design/methodology/approach
A descriptive survey research design was used to investigate the perceived usefulness and satisfaction levels among undergraduate students regarding university library portal services. Data were collected through surveys administered to 658 undergraduate respondents across multiple universities in South-West Nigeria.

Findings
The findings indicate that undergraduate students’ top reasons for using the portal were for tasks such as locating research materials, accessing databases, requesting bibliographies and checking the library catalog. Library computers and school information and communication technology center computers were identified as the most preferred access point, followed by computer labs and campus Wi-Fi networks. Undergraduates rated the portals as highly useful, particularly for saving time locating resources, checking material status and patronizing the library. High satisfaction was reported for services such as attending workshops, events and receiving research support through the portals workshops. Moderate satisfaction levels existed for accessing policies/hours, the institutional repository and renewals of books online. A strong positive correlation (r = 0.785, p < 0.05) was found between perceived usefulness and satisfaction.

Originality/value
This study contributes to the understanding of undergraduate students’ perceptions regarding the utility and satisfaction of university library portal services in the context of South-West Nigeria. It underscores the importance of aligning portal services with students’ academic and research needs to enhance overall satisfaction levels. In addition, it provides insights into areas where improvements can be made to further enhance the effectiveness and satisfaction derived from these services.
Effect of wing height layout on the aerodynamic performance ofhigh-speed train
Authors: Xiong Xiaohui , Geng Jiaxu , Wang Kaiwen , Wang Xinran 
Published: August 2024

Purpose
This paper aims to investigate the effect of different wing height layouts on the aerodynamic performance and flow structure of high-speed train, in a train-wing coupling method with multiple tandem wings installed on the train roof.

Design/methodology/approach
The improved delayed detached eddy simulation method based on shear stress transport k-

ω turbulence model has been used to conduct computational fluid dynamics simulation on the train with three different wing height layouts, at a Reynolds number of 2.8 × 106. The accuracy of the numerical method has been validated by wind tunnel experiments.

Findings
The wing height layout has a significant effect on the lift, while its influence on the drag is weak. There are three distinctive vortex structures in the flow field: wingtip vortex, train body vortex and pillar vortex, which are influenced by the variation in wing height layout. The incremental wing layout reduces the mixing and merging between vortexes in the flow field, weakening the vorticity and turbulence intensity. This enhances the pressure difference between the upper and lower surfaces of both the train and wings, thereby increasing the overall lift. Simultaneously, it reduces the slipstream velocity at platform and trackside heights.

Originality/value
This paper contributes to understanding the aerodynamic characteristics and flow structure of a high-speed train coupled with wings. It provides a reference for the design aiming to achieve equivalent weight reduction through aerodynamic lift synergy in trains.
Flow control by a hybrid use of machine learning and control theory
Authors: Ishize Takeru , Omichi Hiroshi , Fukagata Koji 
Published: August 2024

Purpose
Flow control has a great potential to contribute to a sustainable society through mitigation of environmental burden. However, the high dimensional and nonlinear nature of fluid flows poses challenges in designing efficient control laws using the control theory. This paper aims to propose a hybrid method (i.e. machine learning and control theory) for feedback control of fluid flows, by which the flow is mapped to the latent space in such a way that the linear control theory can be applied therein.

Design/methodology/approach
The authors propose a partially nonlinear linear system extraction autoencoder (pn-LEAE), which consists of convolutional neural networks-based autoencoder (CNN-AE) and a custom layer to extract low-dimensional latent dynamics from fluid velocity field data. This pn-LEAE is designed to extract a linear dynamical system so that the modern control theory can easily be applied, while a nonlinear compression is done with the autoencoder (AE) part so that the latent dynamics conform to that linear system. The key technique is to train this pn-LEAE with the ground truths at two consecutive time instants, whereby the AE part retains its capability as the AE, and the weights in the linear dynamical system are trained simultaneously.

Findings
The authors demonstrate the effectiveness of the linear system extracted by the pn-LEAE, as well as the designed control law’s effectiveness for a flow around a circular cylinder at the Reynolds number of ReD = 100. When the control law derived in the latent space was applied to the direct numerical simulation, the lift fluctuations were suppressed over 50%.

Originality/value
To the best of the authors’ knowledge, this is the first attempt using CNN-AE for linearization of fluid flows involving transient development to design a feedback control law.
Digital marketing and purchase intention of bank services: the role of trust and engagement
Authors: Otopah Alex Akuffo , Dogbe Courage Simon Kofi , Amofah Ofosu , Ahlijah Bright 
Published: August 2024

PurposeThe study examined the mediating and moderating roles of engagement and trust in the relationship between digital marketing and purchase intentions in the banking industry.Design/methodology/approachThe study was quantitative and cross-sectional and used a sample of 462 respondents drawn through a combination of purposive and convenience sampling techniques. The main method of data analysis was the covariance-based structural equation modeling used to assess the paths relationships, using the Amos v.23 software. Prior to that, a confirmatory factor analysis was done to assess the reliability and validity of the instrument.FindingsThe empirical findings support the hypothesized relationship between digital marketing and purchase intention of banks’ services. Consumer engagement partially was found to mediate the association between digital marketing and purchase intentions. Finally, consumer trust moderates the relationship between digital marketing and consumer engagement.Research limitations/implicationsGiven digital marketing is evolving with new tools and channels coming up by the day, we recommend that future studies should explore others such as search engine marketing, affiliate marketing, content marketing, display advertisement etc. These will help give a broader perspective to the digital marketing strategy and its effect on consumers’ purchase intentions of banks’ services.Practical implicationsThe study makes a strong case for the use of multi-channel and/or integrative approach, improving digital infrastructure and systems, adopting new and emerging digital tools/channels such as artificial intelligence, chatbots among others to facilitate digital marketing strategy implementation while ensuring active consumer engagement. It further underscores the need for managers to build trust and regularly engage consumers through their digital marketing channels.Originality/valueThe integration of the variables in the study provides new empirical understanding and extends knowledge in digital marketing theory. It also serves as a foundation for future studies to explore other areas in the digital marketing, especially from a developing digital economies perspective.
Does corporate sustainability performance matter for cash holdings? International evidence
Authors: Ho Ly , Lu Yue 
Published: August 2024

PurposeWe examine the impact of corporate sustainability performance (CSP) on corporate cash holdings, focusing on the moderating impacts of industry’s concentration, financial constraints, and institutional environments.Design/methodology/approachThe empirical analysis is conducted on a sample of 31 countries from 2002 to 2018. We use the pooled OLS regressions controlling for fixed effects. We further address endogeneity issues using an instrumental variable approach, the Difference-in-Differences regression based on an exogenous shock, and the propensity score matching.FindingsWe find that firms with superior CSP hold more cash. This result is valid after a series of tests for robustness and endogeneity issues, suggesting a causal effect of CSP on corporate cash holdings. In the cross section, the positive impact of CSP on cash holdings is more pronounced for firms operating in highly concentrated industries, but attenuated for firms with financial constraints and for those operating in countries with better institutional environments. We further show that CSP affects cash holdings through the channel of financial distress risk.Practical implicationsIn making investment decisions, investors should not only examine corporate financial performance and sustainability profile, but also understand the related cash holding levels and financial distress costs. Corporate managers making decisions on levels of cash holdings should pay more attention to their sustainability behavior, especially for firms operating in concentrated industries and/or facing financial constraints. Governments and authorities can apply regulations to encourage firms to engage more in sustainable activities, as well as establish good institutional environments in the country.Originality/valueUsing a comprehensive international dataset, our paper contributes to two strands of literature: the economic impact of CSP and the driver of cash holdings. We further focus on the moderating role of industry concentration and firms’ financial constraints. Our international sample also allows us to exploit the effect of country-level informal institutions.
Trust failure dynamics in developed and developing Asia intercultural communication: perspectives from a Japanese subsidiary in Thailand
Authors: Ashta Ashok , Stokes Peter , Srisuphaolarn Patnaree 
Published: August 2024

Purpose
Within international human resources management scholarship, the importance of trust for good employee relations is well-recognized. This paper aims to deepen understanding of extant intercultural communication (IC) studies on trust, with practical implications for globalizing organizations, by surfacing particularities of a developed Asia (Japanese) subsidiary in developing Asia (Thailand). It thereby contributes to the United Nations Sustainable Development Goals on International Partnerships (UN SGD 17) and decent work (UN SDG 8).

Design/methodology/approach
The paper draws on first-hand interviews with Thai executives of varying responsibilities at a Japanese manufacturer to understand how IC can lead to trust failure in globalizing organizations. It follows a subjectivist, social constructivist epistemology to deepen understanding.

Findings
The findings break ground toward an innovative understanding of how Thai executives’ expectations might be betrayed, by surfacing a novel conceptualization of trust failure.

Research limitations/implications
Research is limited to the case examined and the limitation is recognized within the paper. This paper offers an important theoretical refinement – a novel understanding and contribution to how trust might falter.

Practical implications
The findings have important practical implications for international organizations to be wary of power (and especially inequalities), insecurity and the resultant need for empathetic interpersonal relations in Thailand. Similar insights could be potentially relevant in other developed–developing Asia dyadic contexts as well because of the broad-based design of the current case study. Recommendations for staff selection are offered.

Social implications
The study directly relates to global society’s sustainability objectives, especially decent work that targets a safe working environment for all.

Originality/value
The paper offers in-depth original insights into individual business executives’ values for trust creation in intercultural international organizations. It addresses the paucity of lived experience accounts of trust “failures” in Developed-Developing Asia contexts, valuable to realizing UN SDG 17 that pertains to international partnerships.
Quality leadership, technology integration and patient care quality across countries: moderating roles of national culture and infrastructure development
Authors: Chakraborty Subhajit , Gonzalez Jorge A. , Sahagun Miguel , Scheuer Cara-Lynn 
Published: August 2024

Purpose
To better understand the nature and effective delivery of quality health-care globally, this paper aims to study the role of quality leadership on patient care quality (PCQ) delivered in hospitals, including the intervening role of technology integration and two country-level factors – national culture and infrastructure development – in North America (Canada, Mexico and the USA).

Design/methodology/approach
PCQ comprises four facets: interpersonal, technical, environmental and administrative quality. Using survey data and interdisciplinary theoretical support (e.g. quality management and the Global Leadership and Organizational Behavior Effectiveness Project [GLOBE] model of national culture), this paper tested for moderated mediation between hospital quality leadership and the four-facet PCQ model with technology integration as the mediator and national culture and infrastructure development as moderators.

Findings
Results show that technology integration partially mediates the relationship between hospital quality leadership and PCQ and that national culture and infrastructure development shape the role of hospital quality leadership on PCQ. Hence, these national factors must be considered holistically to understand the impact of hospital quality leadership on patient care.

Practical implications
To improve PCQ, hospital leaders should broaden their understanding of quality health-care to include technology integration and an awareness of cultural and institutional differences across nations.

Originality/value
This paper used primary data from hospital quality leaders and the four-facet PCQ conceptualization across three large North American nations, offering a more global understanding of service quality in health-care.
Food shining amid nature: marketing potatoes in the Prades mountains (Catalonia, Spain)
Authors: Crespi-Vallbona Montserrat , Fusté-Forné Francesc , Noguer-Juncà Ester 
Published: August 2024

PurposeWhile gastronomy has become a major tourist attraction for rural territories, its study in protected areas remains underexplored. These places use their cultural and natural heritage and landscape, as well as their local identity, to charm visitors. Gastronomy plays a key role in this, and restaurants do their best to promote local food products. The aim of this article is to use a qualitative and case study approach to analyze the marketing and touristic impact of Prades potatoes (“Patata de Prades”), which are certified with a Protected Geographical Indication.Design/methodology/approachA total of 16 semi-structured interviews with restaurateurs (11) and producers (4) and the manager of the local cooperative (1) are the basis for examining the importance of this potato as a form of tourist attraction, its commercialization processes and the role it plays in the development of this protected rural region of Catalonia, in the north-east of Spain.FindingsThe results show that despite the great success of restaurants and food-based tourism with regard to Prades potatoes, the sustainability and future of this starchy vegetable are not guaranteed due to the scarcity of production, as it is a seasonal commodity and there is a lack of generational replacement in farming.Originality/valueFood tourism that relies on local produce represents a “green” model for community development, but a specific public program is required to support the agricultural sector in the isolated areas to prevent the disappearance of this economic sector.
An integrated Bayesian-principal component approach to macroeconomic resilience: the case of the Central Europe and Baltic macro-region
Authors: Beqiraj Elton , Di Bartolomeo Giovanni , Di Pietro Marco , Serpieri Carolina 
Published: August 2024

PurposeIn the fashion of Martin (2012), we develop an innovative application to a standard, well-grounded methodology to investigate resilience in two critical dimensions: recovery and resistance. Our novel approach allows us to investigate the resilience performance to the 2008 financial crisis within countries of this macro-region according to their shock isolation and absorptive capacities.Design/methodology/approachBy individually estimating six open economy DSGE models within the Central Europe and Baltic macro-region, we identify the business-cycle-volatility drivers for each country. Then, we use the outcome of our six estimates to conduct a principal component analysis to determine structural common characteristics required to explain economic resilience in the CEB macro-region.FindingsIn terms of resilience, Central European economies exhibit quite similar paths in terms of recovery, meaning they have similar economic structures. By contrast, Baltic countries behave differently, being outliers in opposite extreme positions. The contrary occurs for resistance: Baltic countries share a similar ranking, whereas Central European economies exhibit substantial differences.Research limitations/implicationsIt is important to acknowledge that a limitation of the analysis is that we explicitly consider each country as a stand-alone open economy which are subject to stochastic disturbances. Precisely, we do not model trade or other interactions across countries within the CEB region and with the rest of the world. Consequently, spillover effects in the aftermath of the shock are not accounted for.Originality/valueWe estimate the relative vulnerability or sensitivity of economies within the macro-region to disturbances and disruptions (resistance) and the speed and extent of recovery from such a disruption or recession (recovery). First, we built two different kinds of measures of resilience by aggregating the estimated parameters through non-centered and centered principal component analysis. Then, we use our model to investigate the relation between financial shock and the economic resilience across the region. The approach can be applied to several case studies, parsimoniously.