bluuebunny/crossref_metadata_2025_split huggingface dataset:
A dynamic model considering the time-varying friction moment of a flexible rotor system
Authors: Liu Jing , An Yuchen , Fancheng Wanli , Tang Changke , Xu Lixin 
Published: July 2023

PurposeBearing friction moments are important factors that affect the vibrations of rotor systems. The bearing friction moments are related to the dimension parameters, lubrication conditions and manufacturing errors of support bearings. This work studies the effects of the bearing friction moments on the vibrations of rotor systems.Design/methodology/approachThe rotor is separated into several shaft elements for formulating a flexible rotor. The time-varying friction moment (TFM) is affected by the time-varying contact loads. The vibrations of FRS from the TFM and Palmgren's friction moment (PFM) calculation methods are compared. Moreover, the effects of the rotor offset and radial clearance on the frequency-amplitude characteristics of FRS are studied.FindingsThe TFM method is more consistent with the actual operation mechanisms. The rotor offset and radial clearance can significantly affect the nonlinear vibrations of FRS. This work provides a new reference and research method for the vibration analysis of rotor systems considering the friction effects.Originality/valueThe elastohydrodynamic lubrication (EHL), elastic hysteresis and differential sliding are considered. A flexible rotor system (FRS) dynamic model considering the TFM is proposed. The vibrations of FRS from the TFM calculation method and empirical calculation formula are compared. The effects of the rotor offset and radial clearance on the frequency–amplitude characteristics of FRS are studied.
Engagement and estrangement: a “tale of two cities” for Bristol’s green branding
Authors: Reynolds Laura , Doering Heike , Koenig-Lewis Nicole , Peattie Ken 
Published: July 2023

Purpose
Drawing on the service-dominant logic and taking a multi-stakeholder brand value co-creation perspective, this paper aims to investigate whether positioning a place brand around sustainability helps or hinders stakeholders’ ability to co-create value for themselves and the brand.

Design/methodology/approach
This paper is based on a case study of Bristol’s city branding following its award of European Green Capital, drawing on 29 in-depth interviews with key informants from multiple stakeholder groups. These interviews are supported by secondary material and field observations.

Findings
The findings evidence a “tale of two cities”. When sustainability is used as a positioning device, tensions are identified across three elements of brand co-creation: brand meanings; extraordinary versus mundane brand performances; and empowerment and disempowerment in branding governance. These tensions create stakeholder experiences of both engagement and estrangement.

Research limitations/implications
This paper is based on one case study and evaluates face-to-face stakeholder interactions. Future research could access further stakeholders, across multiple cities and also examine their digital engagement.

Practical implications
Positioning a brand as sustainable (i.e. green) requires strong commitment to other ethical principles in practice. Brand practitioners and marketers may benefit from advancing stakeholders’ everyday brand performances to reduce disillusionment.

Originality/value
Rallying around virtuous associations, i.e. sustainability, does not in itself facilitate the generation of value for stakeholders and the brand, but instead can illuminate power imbalances and tensions in stakeholder interactions that result in a co-destruction of value.
Measuring energy-based environmental efficiency of buildings using data envelopment analysis models - a hospital application case
Authors: Koç Ali , Ulusam Seçkiner Serap 
Published: July 2023

Purpose
This study aims to investigate environmental efficiency based on energy change by using energy-related or nonenergy-related variables by reckoning with months and years as decision-making units (DMUs) for a hospital under radial and nonradial models.

Design/methodology/approach
The non-oriented slack-based measures (SBM)-data envelopment analysis (DEA) model considering desirable and undesirable outputs has been embraced in this study, where its obtained results were compared with the results of other DEA models are output-oriented SBM-DEA and Banker, Charnes, & Cooper-DEA. For this purpose, this research has used a data set covering the 2012–2018 period for a reference hospital, which includes energy-related and nonenergy-related variables.

Findings
The results demonstrate that environmental efficiency based on energy reached the highest level in the winter months, whereas the summer months have the lowest efficiency values arising from the increasing electricity consumption due to high cooling needs. According to results of the non-oriented SBM model, the month with the highest efficiency in all periods is January with a 0.936 average efficiency score, the lowest month is August with a 0.406 value.

Originality/value
This paper differs from other studies related to energy and environmental efficiencies in the literature with some aspects. First, to the best of the authors’ knowledge, this study is the first one that takes into account time periods (months and years) as (DMUs for a single organization. Second, this study investigates environmental nonefficiencies, which are derived from energy uses and factors affecting energy use.
Study the behaviour of transient elastohydrodynamic lubrication contact at motion start-up in the presence of surface roughness
Authors: Abd Alsamieh Mohamed 
Published: July 2023

Purpose
This study aims to present a numerical solution for the analysis of the influence of surface roughness as presented by a sinusoidal ripple of different amplitude and wavelength on the performance of transient elastohydrodynamic lubrication at motion start-up under different operational parameters of entraining speed and load as well as different acceleration rates.

Design/methodology/approach
A statistical asperity micro-contact model represented by a sinusoidal ripple expressed by two parameters (wavelength and undeformed amplitude) is considered. The ball equation of motion is used to calculate the force on the ball as it starts to move. The time-dependent Reynolds equation is solved together with surface deformation and statistical asperity models using the Newton–Raphson technique with the Gauss–Seidel iteration method.

Findings
The behaviour of the film thickness was found to be strongly influenced by the acceleration rate for different ripple amplitude and wavelength parameters. The effect of increasing the final entraining speed will eventually lead to rapid film thickness build-up and increase the film thickness jump at the moment of motion start-up. The effect of increasing applied load is to reduce the deviation of the minimum film thickness jump at the start-up of motion, making its value approximately equal to the steady-state value over the entire run-time period.

Originality/value
Influence of surface roughness for various wavelength and undeformed amplitude on the performance of transient elastohydrodynamic lubrication at motion start-up is presented at different acceleration rates as well as for different operating parameters of entraining speed and load. Ball equation of motion is used to calculate the force on the ball as it starts to move.
Whole-institution approach to social justice education for preservice teachers
Authors: Moran Kaitlin K. , Sheppard Mary E. , Wang Aubrey 
Published: July 2023

PurposeThis study used the design process (analysis, development, and evaluation) to understand and refine the process, dimensions, and outcomes of a multi-year, whole-institution approach to social justice education for preservice teachers (PSTs) at one institution. The authors used shared governance to establish a cross-disciplinary faculty-student learning community and provided interdisciplinary social justice learning opportunities to PSTs across multiple years. These were delivered using high-impact practices such as community-engaged learning and ePortfolios.Design/methodology/approachThe authors used formative data to examine and refine this study's program design. The authors assessed engagement within and across the components of the whole-institution approach and the impact on, and change in, social justice learning and orientation for PSTs.FindingsFindings showed deepened engagement within and across the components of the whole-institution approach, however, committee representation, opportunities for interdisciplinary collaboration, and coordinated field experiences are areas that can be strengthened. All PSTs demonstrated an understanding of the connections between annual social justice foci and teaching practices, and some documented growth in social justice awareness over time. The authors found more clarity is needed around archiving and keeping social justice event reflections in the ePortfolio each year.Originality/valueThis study adds to the existing literature by using the design process to refine the development of a whole-institution social justice education program for PSTs.
A comparative analysis of the role of gender in the commission of white-collar crimes: a review in Norway, America, Portugal, India and Iran
Authors: Kamaei Maryam , Abolhasani Salameh , Farhood Naghmeh 
Published: July 2023

Purpose
The purpose of this research is to analyze the role of gender in the commission of white collar crimes and investigate it in five countries: Norway, Portugal, America, India and Iran.

Design/methodology/approach
Descriptive analytical method is used in this article.

Findings
A total of five observations were examined about the rank and percentage of women's participation in white-collar crimes, namely, from Norway (rank 3, 7%), USA (rank 26, 5%), Portugal (29th rank, 13%), India (rank 135, 11%) and Iran (rank 143, 5%). As is visually obvious, there seems to be no relationship between the level of gender equality and the percentage of women involved in white-collar crimes. However, according to Hobbs, in most research, the issue of gender and its effect on the occurrence of white-collar crimes have not been addressed, but by using the limited statistics and limited information available, it can be concluded that a small number of women have committed this crime. According to global crime reports, only 15 out of 200 prosecutions for white-collar crimes involve women.

Originality/value
To the best of the authors’ knowledge, this article is original and has been submitted only to this journal and has not been submitted to another journal at the same time.
Effect of risk attitude on cryptocurrency adoption for compensation and spending
Authors: Sridharan Uma , Mansour Fady , Ray Lydia , Huning Tobias 
Published: July 2023

Purpose
This study aims to investigate the effect of risk tolerance on the individual choice of adopting Bitcoin in the form of making and receiving payment and receiving compensation.

Design/methodology/approach
The study uses data collected from an anonymous survey of 225 undergraduate and graduate students to measure their risk attitude using the general risk-taking propensity scale proposed by Zhang et al. (2018) and the risk-taking index, proposed by Nicholson et al. (2018). After controlling for a variety of personal traits, the study uses logistic regression to identify the predicted probabilities and marginal effects on individual choice of adopting Bitcoin.

Findings
The findings of this study suggest that individuals with a higher risk-seeking attitude are more likely to choose to receive payment for goods they sell in Bitcoin and more likely to choose to receive a portion of their compensation in cryptocurrency. Individuals in the higher-income groups are more likely to adopt Bitcoin 46% and 65% than their lower 14% and 45% and middle income 4% and 18% counterparts. While there was no statistically significant difference between males and females in adopting Bitcoin, respondents between the age of 26 and 29 were more likely to adopt Bitcoin. The effect on receiving gold was slightly smaller but highly comparable to that of receiving Bitcoin, which highlights a similar perception of risk toward the Bitcoin and gold.

Originality/value
The study uses a new data set collected by surveying 225 individuals and two different risk measurements to identify the relationship between perceived risk and Bitcoin adoption.
Residents and the place branding process: socio-spatial construction of a locked-down city’s brand identity
Authors: Feng Songming , Berndt Adele , Ots Mart 
Published: July 2023

Purpose
Building on Kavaratzis and Hatch’s (2013) identity-based place branding model, this paper aims to explore the spatial and social dimensions of the place brand identity formation process and how residents used social media to participate in the process of shaping a city brand during a crisis.

Design/methodology/approach
Adopting an interpretive and social constructionist approach, this study analyses a sample of 187 short videos created and posted by Wuhan residents on the social media app Douyin during a COVID-19 lockdown. The authors read the videos as cultural texts and analysed underlying social processes in the construction of place brand identity by residents.

Findings
This study develops an adapted conceptual model of place identity formation unfolding in four sub-processes: expressing, impressing, mirroring and reflecting, and each sub-process subsumes two dimensions: the social and the spatial. In addition, this study empirically describes how residents participated in place branding processes in two ways, namely, their construction of city brand identity via communicative practice and their exertion of changes to a city brand during a crisis. The model reveals how place brands emerge and can be transformed.

Originality/value
This paper amplifies Kavaratzis and Hatch's (2013) identity-based place branding model by testing it in an empirical study and highlighting the social and spatial dimensions. This paper contributes to research about participatory place branding by exploring how residents participated in the place branding process. This study analysed short videos on social media, a new communication format, rather than textual narratives dominating past studies.
The moderation effect of country culture in the reciprocal relationship between strategic orientations and export performance: a country-level study
Authors: Escandon Diana , Salas Jairo , Losada-Otalora Mauricio 
Published: July 2023

PurposeThis paper analyses the moderation effect of country culture in the reciprocal relationship between the strategic orientations (Organizational entrepreneurship, organizational innovation and Organizational learning) and the export performance of the firms in two countries with different cultural characteristics (Sociability and Performance). In the same way, it is intended to evaluate if there is a reciprocal relationship between strategic orientations and export performance.Design/methodology/approachIn order to achieve the objectives of the research, a structural equations model is made. One of the benefits of this model is that it allows not only to analyze of the causal relationships of the study variables but also to identify of the behavior presented by the firms in their export performance activities. The database contains 400 SMEs from Colombia and Vietnam, with an export performance developed during 2022.FindingsIt was possible to verify a reciprocal relationship between the strategic orientations of organizational entrepreneurship and organizational innovation. However, the relationship between organizational learning and export performance must be validated. Similarly, it was found that countries with a cultural focus on performance will have better export performance than those with a focus on sociability.Research limitations/implicationsThe main limitation of this study is the focus on only two countries with diverse cultural characteristics. Future research will aim to verify these relationships with a more significant number of countries and over a more extended time range.Practical implicationsAccording to the results, assessing the firms' strategies to prioritize product innovation is necessary. This axis is fundamental because it is the means to create value for products and develop the capacities and resources necessary to compete in the international arena.Social implicationsAmong the most critical implications of a country are the social ones. Thus, to the extent that the results in innovation are more evident in the management area, this will help improve the production platform and general conditions at the country level.Originality/valueThe most significant value of this research is in studying the moderation effects of cultural approaches at the country level in the bidirectional relationships studied in this work.
Building e-trust and e-retention in online shopping: the role of website design, reliability and perceived ease of use
Authors: Saoula Oussama , Shamim Amjad , Mohd Suki Norazah , Ahmad Munawar Javed , Abid Muhammad Farrukh , Patwary Ataul Karim , Abbasi Amir Zaib 
Published: July 2023

PurposeThis study aims to examine the impact of website design, reliability and perceived ease of use as an engagement motivational factors on customer e-trust and e-retention in online shopping.Design/methodology/approachBy using deductive approach, quantitative methods and purposive sampling technique, this study has collected the data from 295 young online customers to enhance an understanding of website design, reliability and perceived ease of use in an online shopping context.FindingsThe findings revealed interesting insights where reliability is the most significant predictor of customer e-trust in online shopping, followed by perceived ease of use and website design. In addition, a significant mediating effect of e-trust is found between customer e-retention, website design, reliability and perceived ease of use.Research limitations/implicationsFuture research is recommended to predict the antecedents of online engagement motivational factors with value co-creation and co-creation experience in online shopping context.Originality/valueThis study offers fresh insights about driving elements and impediments of online customer retention. Customer engagement comprising of website design, reliability and perceived ease of use appear to influence the online customer retention through direct and indirect effect.
Why is sharing not enough for brands in video ads? A study about commercial video ads' value drivers
Authors: Chinelato Flavia Braga , Gonçalves Filho Cid , Randt Daniel Fagundes 
Published: July 2023

PurposeThe main goal of viral marketing is to affect brands positively. But most studies concern the causes of an ad going viral, not its impact on brands. In this sense, this study aims to demonstrate and compare video ads' value drivers on brands and sharing, determining which antecedents maximize results on each, enabling the best ad performance for advertisers.Design/methodology/approachA survey was conducted with 368 respondents who watched viral video ads from five global companies on YouTube. The proposed model was tested using structural equation modeling in SmartPLS4.FindingsThe results of this study demonstrated that product category involvement is essential for viral advertising. Furthermore, the entertainment value is the most relevant antecedent of sharing, but it does not affect brand equity; it is the social value responsible for brand equity.Practical implicationsMarketing managers should create ads that simultaneously generate entertainment and social values, maximizing sharing and branding effects. However, if only one of the two effects (brand/share) is achieved, then the advertiser will fail to obtain maximum performance.Originality/valueThe mainstream of viral marketing research is focused on antecedents of sharing. However, sharing is not enough to provide brand effects and return on investment of advertisement. This study reveals that different consumers’ values drive sharing and brand equity, suggesting that firms should consider a dual value generation strategy regarding the performance of viral video ads. On the other hand, this research conciliates the extant literature about the phenomena with the importance of product category involvement.
Rheotaxis in Mycoplasma gliding
Authors: Nakane Daisuke 
Published: July 2023

AbstractThis review describes the upstream‐directed movement in the small parasitic bacterium Mycoplasma. Many Mycoplasma species exhibit gliding motility, a form of biological motion over surfaces without the aid of general surface appendages such as flagella. The gliding motility is characterized by a constant unidirectional movement without changes in direction or backward motion. Unlike flagellated bacteria, Mycoplasma lacks the general chemotactic signaling system to control their moving direction. Therefore, the physiological role of directionless travel in Mycoplasma gliding remains unclear. Recently, high‐precision measurements under an optical microscope have revealed that three species of Mycoplasma exhibited rheotaxis, that is, the direction of gliding motility is lead upstream by the water flow. This intriguing response appears to be optimized for the flow patterns encountered at host surfaces. This review provides a comprehensive overview of the morphology, behavior, and habitat of Mycoplasma gliding, and discusses the possibility that the rheotaxis is ubiquitous among them.
Decoding the DNA and RNA viromes of a tropical urban lagoon
Authors: Andrianjakarivony Felana Harilanto , Bettarel Yvan , Cecchi Philippe , Bouchard Sonia , Chase Emily , Desnues Christelle 
Published: July 2023

AbstractHuman and livestock sewage is one of the major causes of excess nutrients, leading to the eutrophication of aquatic ecosystems and potentially to the emergence or spread of pathogenic viruses. This study aimed to investigate the composition and diversity of aquatic viromes in a highly anthropized lagoon, to identify the presence of pathogenic taxa and to explore their use as possible viral indicators of faecal contamination. For this, water and sediment samples were collected in the Ebrié Lagoon (Ivory Coast) at seven stations with contrasting levels of eutrophication. The DNA viromes of the planktonic and the benthic compartments were highly divergent, but were not influenced by the level of eutrophication. Conversely, the RNA viromes in the water column were comparable to those found in sediment, but showed significant differences between the stations. We detected the presence of viral DNA and RNA sequences we had assigned as indicators of faecal contamination (smacovirus, pecovirus and pepper mild mottle virus) as well as human pathogens (human cyclovirus, coxsackie B virus and picobirnavirus), which were all enriched in the most eutrophicated sites. These findings suggest that the examination of viromes represents a promising tool for assessing the state of human‐induced contamination of aquatic ecosystems.