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GraphQL is a new Open API specification that allows clients to send queries and obtain data flexibly according to their needs. However, a high-complexity GraphQL query may lead to an excessive data volume of the query result, which causes problems such as resource overload of the API server. Therefore, this paper aims to address this issue by predicting the response data volume of a GraphQL query statement.

This paper proposes a GraphQL response data volume prediction approach based on Code2Vec and AutoML. First, a GraphQL query statement is transformed into a path collection of an abstract syntax tree based on the idea of Code2Vec, and then the query is aggregated into a vector with the fixed length. Finally, the response result data volume is predicted by a fully connected neural network. To further improve the prediction accuracy, the prediction results of embedded features are combined with the field features and summary features of the query statement to predict the final response data volume by the AutoML model.

Experiments on two public GraphQL API data sets, GitHub and Yelp, show that the accuracy of the proposed approach is 15.85% and 50.31% higher than existing GraphQL response volume prediction approaches based on machine learning techniques, respectively.

This paper proposes an approach that combines Code2Vec and AutoML for GraphQL query response data volume prediction with higher accuracy.

This study explores factors that influence the initiation of leadership coaching relationships that include externally employed coaches and school administrators.

This qualitative research study includes semi-structured interviews, observations and documents collected across three academic years within the context of a university-based leadership coaching program. Participants included six leadership coaches and six school administrators who participated in the program.

Qualitative analysis indicates that gender and race, prior professional experience, pre-existing professional relationships and the complexity of the district’s organizational structure influence the initiation of the coaching relationship.

Confidentiality restrictions imposed by the program limit opportunities for member checking and other forms of triangulation. Additional data collection using more expansive research methods would help address this limitation.

This study contributes to the sparse literature about leadership coaching with school administrators by describing how different factors influence initiation coaching relationships.

The Village model, most extensively developed in the USA, is an innovative response to ageing populations and older adults who wish to remain living independently within their community. The “Urban Villages” participatory action research study aimed to test the potential of the Village model to work with groups of older adults in two economically deprived, inner-city neighbourhoods in Manchester, UK.

Participatory methods were used to work with residents to, first, adapt the Village model to the Manchester setting, and second, to develop and deliver community projects that supported ageing in place. The study aimed to involve marginalised individuals and groups in the co-design, leadership and implementation of the projects. Ethnographic methods were applied to observe and reflect on the development of “Urban Villages”. Interviews and focus groups were organised to gather the views of the residents involved in the community projects.

Residents were supported to develop and test seven projects, all aimed at reducing social isolation and supporting ageing in place. The study provides new insights into challenges related to co-production with older people in deprived neighbourhoods. These challenges are presented under the following headings: individual capacity and expectations; collective capacity including communication and knowledge; and the capacity of place.

To date, only a limited amount of literature is available showing how co-production with older adults can be realised when working with marginalised groups and deprived communities. The paper explores the potential of participatory approaches to develop age-friendly initiatives through strengthening the capacity of older adults to age in place.

Drawing on the social presence theory, this study aims to explore how supplier–customer social media interactions influence supplier observers’ trust in the customers and what mechanisms contribute to variation in trust experience.

A total of 36 semi-structured interviews were conducted with Chinese suppliers using WeChat for business-to-business interactions. Data were analyzed in three steps: open coding, axial coding and selective coding.

Findings reveal that varied trust is based not only on the categories of social presence of interaction – whether social presence is embedded in informative interactions – but also on the perceived selectivity in social presence. Observer suppliers who experience selectivity during social and affective interactions create a perception of hidden information and an unhealthy relationship atmosphere, and report a sense of emotional vulnerability, thus eroding cognitive and affective trust.

The findings contribute new understandings to social presence theory by exploring the social presence of interactions in a supplier–supplier–customer triad and offer valuable insights into business-to-business social media literature by adopting a suppliers’ viewpoint to unpack the mechanisms of how social presence of interaction positively and negatively influences suppliers’ trust and behavioral responses.

This paper examines why individuals start their hospitality careers by becoming temporary lifeguards while aspiring to later promotion. It reports data from young people working in one major upmarket hotel chain that operates in the Gulf but has a global reach. This study aims to address issues regarding this often-overlooked career path for young staff.

A qualitative questionnaire was distributed to lifeguards working in a luxury hotel chain in a Gulf country to explore their reasons for working as a lifeguard and their experiences in this role. Data were analysed using QDA Miner and WordStat to generate coherence and similarity indices.

It is found that the attractions include good training with a well-established company operating in an upmarket location, but other important factors include career prospects, skill enhancement, self-development, monetary savings and experience working in one of the world’s most exciting tourist locations.

The results offer implications for management looking to recruit expatriate labour without considering long-term employment or residence. Nonetheless, while this offers opportunities to assess many potential long-term employees, there are costs to the practice.

Little research has been conducted on lifeguards and how employment in such roles can develop careers in hospitality. The study contributes to understanding motives and career development and conceptually suggests that liminal status complements those drawn to protean career development. The results shed light on how new employees, including management trainees, undertake liminal, protean careers, to care for family, develop their careers and enter markets that may otherwise be difficult to enter.

This study aims to examine ethical practices in the banking sector by testing the relationships between customer perceptions of ethicality and brand attributes like affect, image and equity.

Drawing on the social exchange theory, the authors advance the consumer’s perspective in explaining brand equity in the banking sector. Following the survey technique, the authors used the Hayes’ Macro Process in analysing the data collected from 148 bank customers in New Zealand.

The findings suggest that customers’ perception of ethicality, brand image and affect are significantly associated with brand equity. Also, brand image and affect significantly mediate the relationship between customer’s perception of ethicality and brand equity.

The main limitation of this study is the use of survey and cross-sectional methods. Future research may adopt mixed-method techniques to provide insightful information on how these variables influence brand equity.

The study demonstrates the mechanisms that facilitate brand equity and contributes to theory by analysing the factors of brand equity in the banking sector, which has been less investigated.