bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of temperature and Ti addition on high-temperature oxidation behaviors of Co-Al-W based superalloys
Authors: Ma Chunmei , Yang Songting , Zhang Yuheng , Wang Kaikun , Fu Huadong 
Published: July 2020

PurposeDue to the special service environment of superalloys, this paper aims to obtain effects of temperature and Ti addition on high temperature oxidation behavior of Co-Al-W-B alloys.Design/methodology/approachIsothermal oxidation experiment of Co-Al-W-based alloys were carried out at 800°C, 900°C and 1000°C for different times (3, 5, 10, 20, 50 and 100 h) referring to the method of HB5258-2000. Oxidation weight gain curves and oxidation products were detected.FindingsThe results showed that the average oxidation rates of Co-Al-W-B alloy at 800 °C and 900 °C were 0.489 g·m−2·h−1and 0.888 g·m−2·h−1, respectively, which belonged to an antioxidant grade. However, the average oxidation rate at 1000 °C was 2.068 g m−2·h−1, belonging to the secondary oxidation resistance class. In the alloy with Ti addition, dense Ti oxides film were formed at the early oxidation stage and then gradually diffused later, which can increase the oxidation resistance of the alloys to some extent. By analyzing the oxidation products of Co-Al-W-B alloy, it was found that a dense Al2O3layer could be formed when the alloy was oxidized at 800°C. The continuous Al2O3layer would prevent the oxygen from further spreading and make the alloy into the stable oxidation stage. However, only a non-dense Al2O3layer were observed with 900°C oxidation.Originality/valueIt can provide references for the composition design, preparation process optimization and protective coating selection of the γ′ phase strengthened cobalt-base superalloys.
Assessing the effectiveness of internal Sharīʿah audit structure and its practices in Islamic financial institutions: a case study of Islamic banks in Yemen
Authors: Algabry Latifah , Alhabshi Syed Musa , Soualhi Younes , Othman Anwar Hasan Abdullah 
Published: July 2020

PurposeThis study aims to explore and assess the key Sharīʿah governance factors that may have an influence on the internal Sharīʿah audit structure and its practices in Islamic financial Institutions in Yemen, particularly in the Islamic banking sector.Design/methodology/approachTo do so, the study adopts a qualitative approach employing case study analysis, and both primary and secondary data are used to formulate the appropriate interview questions and achieve the objectives of the study.FindingsThe authors observed that the key factors that help in assessing the internal Sharīʿah audit structure and its practices are Sharīʿah auditor charter, audit plan and audit manual. In addition, the authors observed that, in general, internal Sharīʿah audit tends to be subjective in Yemeni banks because they depend on the internal Sharīʿah auditor’s qualifications and experience more than formal guidelines and regulations. This is because there are no detailed internal Sharīʿah audit plans or detailed audit manual. Moreover, the internal Sharīʿah auditor charter is not comprehensive in explaining the duties required of the internal Sharīʿah auditor, and it is mixed with the Sharīʿah Supervisory Board (SSB) duties. This means the internal Sharīʿah auditor lacks the critical tools that enable him to achieve the desired audit manual objectives where the effectiveness of internal Sharīʿah audit can be measured.Practical implicationsOne of the important implications of this study is providing very important guidance about enhancing the areas where shortfalls are found within the Sharīʿah governance process in the Yemeni banking system. This enhancement process of the internal factors of Sharīʿah governance can be achieved by increasing the awareness of the enhancing internal Sharīʿah audit structure as it reflects ultimately on the internal Sharīʿah auditor’s role and his practices.Originality/valueUnderstanding the effectiveness of internal Sharīʿah audit structure among internal auditors will improve the Sharīʿah audit framework standards, enhance the Sharīʿah knowledge among internal auditors and provide general guidelines to design audit programmes for Sharīʿah governance auditing process.
Online dating apps as a marketing channel: a generational approach
Authors: Rita Paulo , Ramos Ricardo Filipe , Moro Sérgio , Mealha Marta , Radu Lucian 
Published: July 2020

PurposeThis study aims to understand if an online dating app is considered an acceptable channel to conduct advertising activities and understand the differences between Generations X, Y and Z for such acceptance.Design/methodology/approachA total of 411 Tinder users’ reactions were obtained and analyzed using text mining to compute the sentiment score of each response, and a Kruskal–Wallis H test to verify if there are statistical differences between each generation.FindingsThe results showed positive acceptability toward the marketing campaign on Tinder, especially Z Generation. Nevertheless, the statistical analysis revealed that the differences between each generation are not statistically significant.Research limitations/implicationsThe main limitation relates to the fact that the participants, during the data collection, revealed their identification, perhaps leading to acquiescence bias. In addition, the study mainly covered the male population. A balanced sample would be positive to examine any possible differences between gender.Practical implicationsResults provide an essential indication for companies regarding their marketing activities conducted on Tinder to fully exploit the possibility of using Tinder as an alternative and valuable channel to conduct marketing activities.Originality/valueUp until now, no studies tried to understand the effect of a marketing activity online on an online dating app.
The moderating role of gender and age in the adoption of mobile wallet
Authors: Chawla Deepak , Joshi Himanshu 
Published: July 2020

PurposeThe purpose of this paper is to examine the factors that influence the attitude and behavioral intention towards mobile wallet adoption and to examine the moderating effect of gender and age between antecedents of mobile wallet adoption and user attitude and intention.Design/methodology/approachBased on the literature review, certain themes around mobile wallet adoption were generated around which inputs were sought through two focus group discussions, first of which comprised working executives and second comprised students. A sample of 744 users of mobile wallet provided their awareness on mobile wallets, various mobile wallet services used and perception on ease of use, usefulness, trust, security, facilitating conditions and lifestyle compatibility (LC). To examine the moderating effect of gender and age, two methods, namely, Henseler’s partial least squares-multi group analysis (PLS-MGA), a non-parametric approach, and PLS-MGA, parametric approach, are used. The data was analyzed using partial least square-structural equation modeling.FindingsThe ease of use, usefulness, trust, security, facilitating conditions and LC significantly influence user attitude and intention. The results show that both gender and age moderate the relationship between select antecedents and attitude and intention and the influence is seen more for males and young users.Research limitations/implicationsThe sample comprises students and professionals from metros and large cities; hence, the generalizability of the results to the population at large may be limited. This study only examines the moderating role of age and gender. Future studies may include other demographic variables such as education, income, occupation, experience and household size.Practical implicationsThe findings help mobile wallet service providers understand the relevance and influence of various antecedent variables on the attitude and intention to adopt technology. This will help to plan and prioritize attributes for marketing purposes to increase the adoption and usage rates. Moreover, managers should plan strategies to enhance confidence among females and old age customers.Originality/valueThe proposed model both investigates the impact of antecedents on user attitude and intention and examines the moderating effect of select demographic variables. There are few empirical studies on the moderating effect of gender and age in the context of mobile wallets in India.
Numerical study of flow and heat transfer behaviors during direct-chill casting of large-size magnesium alloy billet under pulsed magnetic field
Authors: Duan Wenchao , Yin Siqi , Liu Wenhong , Yang Jian , Zhu Qingfeng , Bao Lei , Wang Ping , Cui Jianzhong , Zhang Zhiqiang 
Published: July 2020

Purpose
The purpose of this paper is to investigate the effect of pulsed magnetic field (PMF) with different duty cycles on the melt flow and heat transfer behaviors during direct-chill (DC) casting of large-size magnesium alloy billet and find the appropriate range of duty cycle.

Design/methodology/approach
A transient two-dimensional mathematical model coupled electromagnetic field, flow field and thermal field, is conducted to study the melt flow and temperature field under PMF and compared with that under the harmonic magnetic field.

Findings
The results reveal that melt vibration and fluctuation are generated due to the instantaneous impact of repeated thrust and pull effects of Lorentz force under PMF. The peak of Lorentz force decreases greatly with the increasing duty cycle, but the melt fluctuation region is expanded with higher duty cycle, which accelerates the interior melt velocity and reduces the temperature gradient at the liquid-solid interface. However, PMF with overly high duty cycle has adverse effect on the melt convection and limited influence on the interior melt. A duty cycle of 20% to 50% is a reasonable range.

Practical implications
This paper can provide guiding significance for the setting of duty cycle parameters on DC casting under PMF.

Originality/value
There are few reports on the effect of PMF parameters during DC casting with applying PMF, especially for duty cycle, a parameter unique to PMF. The findings will be helpful for applying the external field of PMF on DC casting.
Agility and lean practices as antecedents of supply chain social sustainability
Authors: Nath Vishnu , Agrawal Rajat 
Published: July 2020

PurposeThe present study aims to empirically investigate whether supply chain agility and lean management practices are antecedents of supply chain social sustainability.Design/methodology/approachData were collected from 311 supply chain practitioners from the Indian manufacturing sector. Confirmatory factor analysis was employed to test the validity and reliability of the measures used, and a structural model was analyzed to test the hypotheses of the current study.FindingsThe results indicate that agility and lean practices are significant antecedents of social sustainability orientation as well as social sustainability performance. The results also suggest that agility has a significant indirect effect on operational performance via social sustainability orientation, basic social sustainability practices as well as agility is indirectly affecting social sustainability performance via social sustainability orientation and basic social sustainability practices.Practical implicationsThe results of the present study have implications for managers that want to make their supply chain more socially sustainable.Originality/valueThe study is unique in the sense that it empirically links agility and lean practices with social sustainability orientation, social substantiality performance and operational performance in supply chains.
A data-driven and network-aware approach for credit risk prediction in supply chain finance
Authors: Rishehchi Fayyaz Mohammad , Rasouli Mohammad R. , Amiri Babak 
Published: July 2020

PurposeThe purpose of this paper is to propose a data-driven model to predict credit risks of actors collaborating within a supply chain finance (SCF) network based on the analysis of their network attributes. This can support applying reverse factoring mechanisms in SCFs.Design/methodology/approachBased on network science, the network measures of the actors collaborating in the investigated SCF are derived through a social network analysis. Then several supervised machine learning algorithms are applied to predict the credit risks of the actors on the basis of their network level and organizational-level characteristics. For this purpose, a data set from an SCF within an automotive industry in Iran is used.FindingsThe findings of the research clearly demonstrate that considering the network attributes of the actors within the prediction models can significantly enhance the accuracy and precision of the models.Research limitations/implicationsThe main limitation of this research is to investigate the applicability and effectiveness of the proposed model within a single case.Practical implicationsThe proposed model can provide a well-established basis for financial intermediaries in SCFs to make more sophisticated decisions within financial facilitation mechanisms.Originality/valueThis study contributes to the existing literature of credit risk evaluation by considering credit risk as a systematic risk that can be influenced by network measures of collaborating actors. To do so, the paper proposes an approach that considers network characteristics of SCFs as critical attributes to predict credit risk.
Effect of wastes and admixtures on compressive strength of concrete
Authors: Sharma Rachit 
Published: July 2020

Purpose
This paper presents the effects of replacing fine aggregate (FA) with waste foundry sand (WFS) in natural aggregate and construction waste aggregate concrete specimens without and with superplasticizer (SP), silica fume (SF) and fiber (F) to solve the disposal problems of various wastes along with saving the environment. This study aims to investigate the effect of construction waste, WFS along with additives on the stress-strain behavior and development of compressive strength with age.

Design/methodology/approach
The various concrete specimen were prepared in mix proportion of 1: 2: 4 (cement (C): sand: coarse aggregate). The water-cement ratio of 0.5 (decreased by 10% for samples containing SP) to grading 1: 2: 4 under air-dry condition was adopted in the preparation of concrete specimens. The compressive strength of various concrete specimen were noticed for 3, 7 and 28 days by applying load through universal testing machine.

Findings
Upon adding construction and demolition waste aggregates, the compressive strength of concrete after 28 days was comparable to that of the control concrete specimen. An enhancement in the value of compressive strength is perceived when FA is replaced with WFS to the extent of 10%, 20% and 30%. If both construction and demolition waste aggregate and WFS replacing FA are used, the compressive strength increases. When FA is interchanged with WFS in natural aggregate or construction demolition waste aggregate concrete including usage of SF or F, the compressive strength improves significantly. Further, when construction and demolition waste aggregate and WFS replacing FA including SP are used, the compressive strength improves marginally compared to that of control specimen. The rate of strength development with age is observed to follow similar trend as in control concrete specimen. Therefore, construction and demolition waste and or WFS can be used effectively in concrete confirming an improvement in strength.

Originality/value
The utilization of these wastes in concrete will resolve the problem of their disposal and save the environment.
Key training practice indicators for optimal site supervisors’ utilisation in construction firms
Authors: Ijaola Irewolede Aina , Idoro Godwin Iroroakpo , Oladokun Michael Gbolagade 
Published: July 2020

Purpose
The skills and knowledge of site supervisors play an important role in the outcome of construction projects. Evidence gleaned from the literature indicates that poor performance of construction projects remains a central concern for stakeholders in the construction sector. This suggests that the site supervisor’s training is important in the construction project outcomes. Various training programmes are available for site supervisors, yet construction firms are not satisfied with them. The purpose of this study is to determine the key training practice indicators for optimal site supervisor’s usage in construction firms.

Design/methodology/approach
This study adopts a cross-sectional survey research design. In the approach, exploratory factor analysis and confirmatory factor analysis were used to determine the key training practice indicators for site supervisors. Data were collected from 218 construction site supervisors using a questionnaire.

Findings
Findings show that training practices are a multidimensional concept consisting of training needs assessment, training delivery, training evaluation and transfer. From the 50 training practice variables, this study establishes 12 key training practice indicators for training site supervisors in construction firms.

Research limitations/implications
Future research should adopt a longitudinal survey for examining training practices in construction firms.

Practical implications
The identified key training indicators can inform the policies and practices used in the training of site supervisors.

Originality/value
This study contributes to knowledge by establishing 12 significant training practice indicators for optimal site supervisors’ usage in construction firms.
Servant leadership and employee innovative behaviour: exploring psychological pathways
Authors: Iqbal Amjad , Latif Khawaja Fawad , Ahmad Muhammad Shakil 
Published: July 2020

PurposeDrawing on social exchange theory (SET) and conservation of resource (COR) theory, the purpose of this research is to examine the relationship between servant leadership and employees' innovative behaviour and explore the neglected mediating role of psychological safety and thriving.Design/methodology/approachFollowing cross-sectional research design, data was collected from 347 employees of large size information technology (IT) companies in Pakistan. Partial least squares structural equation modeling (PLS-SEM) technique was used for data analysis.FindingsThe results reveal that servant leadership has direct and positive relationship with employees' innovative behaviour. Moreover, psychological safety and thriving partially mediate this relationship.Practical implicationsThis research reinforces the role of servant leadership in organizations striving for a high rate of innovation. Findings of this study suggest managers to practice servant leadership behaviours which enhance employees psychological resources: psychological safety and thriving and prompt them to engage in innovative behaviour.Originality/valueThis research makes novel contribution to the incipient literature by providing first empirical evidence on the simultaneous role of psychological safety and thriving in translating the influence of servant leadership on employees' innovative behaviour.
Public users’ perception of Airbnb in Malaysia: should we regulate?
Authors: Al Sadat Zyed Zafirah , Yong Mun Yee , Tedong Peter Aning 
Published: July 2020

PurposeDrawing from available literature and several case studies, this research aims to determine the criteria to be considered in shaping a framework regulating Airbnb. This paper will identify the regulatory frameworks of Airbnb from an international perspective and investigate the public perception on the criteria to be considered in shaping the framework regulating Airbnb. The criteria needed to be considered to regulate Airbnb are suggested accordingly.Design/methodology/approachA quantitative approach based on central tendency statistics was adopted in this research. Questionnaires were administered to the public to investigate the public's opinion on the criteria to be considered to regulate Airbnb. Finally, the criteria to be considered to regulate Airbnb will be determined. By using the mean analysis, this paper will tease out the ranking of the criteria that should be prioritized in shaping the Airbnb regulatory framework.FindingsThe results indicated that the criteria of “permits and safety” and “housing rules enforcement” outweigh the other “taxes” and “rule enforcement” criteria and shall be prioritized by the local authorities during the formation of Airbnb regulations in Malaysia.Originality/valueThis paper provides valuable pointers for policymakers before the expansion of Airbnb and before it becomes more difficult to regulate.
From tree to network: reordering an archival catalogue
Authors: Bell Mark 
Published: July 2020

Purpose
This paper presents the results of a number of experiments performed at the National Archives, all related to the theme of linking collections of records. This paper aims to present a methodology for translating a hierarchy into a network structure using a number of methods for deriving statistical distributions from records metadata or content and then aggregating them. Simple similarity metrics are then used to compare and link, collections of records with similar characteristics.

Design/methodology/approach
The approach taken is to consider a record at any level of the catalogue hierarchy as a summary of its children. A distribution for each child record is created (e.g. word counts and date distribution) and averaged/summed with the other children. This process is repeated up the hierarchy to find a representative distribution of the whole series. By doing this the authors can compare record series together and create a similarity network.

Findings
The summarising method was found to be applicable not only to a hierarchical catalogue but also to web archive data, which is by nature stored in a hierarchical folder structure. The case studies raised many questions worthy of further exploration such as how to present distributions and uncertainty to users and how to compare methods, which produce similarity scores on different scales.

Originality/value
Although the techniques used to create distributions such as topic modelling and word frequency counts, are not new and have been used to compare documents, to the best of the knowledge applying the averaging approach to the archival catalogue is new. This provides an interesting method for zooming in and out of a collection, creating networks at different levels of granularity according to user needs.