bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sensing for aerospace combustor health monitoring
Authors: Mills Andrew Robert , Kadirkamanathan Visakan 
Published: June 2019

Purpose
This paper proposes new methods of fault detection for fuel systems in order to improve system availability. Novel fault systems are required for environmentally friendly lean burn combustion, but can carry high risk failure modes particularly through their control valves. The purpose of the developed technology is the rapid detection of these failure modes, such as valve sticking or impending sticking, and therefore to reduce this risk. However, sensing valve state is challenging due to hot environmental temperatures, which results in a low reliability for conventional position sensing.

Design/methodology/approach
Starting with the business needs elicited from stakeholders, a quality functional deployment process is performed to derive sensing system requirements. The process acknowledges the difference between test-bed and in-service aerospace needs through weightings on requirements and maps these customer requirements to systems performance metrics. The design of the system must therefore optimise the sensor suite, on- and off-board signal processing and acquisition strategy.

Findings
Against this systems engineering process, two sensing strategies are outlined which illustrate the span of solutions, from conventional gas path sensing with advanced signal processing to novel non-invasive sensing concepts. While conventional sensing may be feasible within a test cell, the constraints of aerospace in-service operation may necessitate more novel alternatives. Acoustic emission (detecting very high frequency surface vibration waves) sensing technology is evaluated to provide a non-invasive, remote and high temperature tolerant solution. Through this comparison, the considerations for the end-to-end system design are highlighted to be critical to sensor deployment success in-service.

Practical implications
The paper provides insight into different means of addressing the important problem of monitoring faults in combustor systems in gas turbines. By casting of the complex design problem within a systems engineering framework, the outline of a toolset for solution evaluation is provided.

Originality/value
The paper provides three areas of significant contributions: a diversity of methods to diagnosing fuel system malfunctions by measuring changes fuel flow distributions, through novel means, and the combustor exit temperature profiles (cause and effect); the use of analytical methods to support the selection (types and quantities) and placement of sensors to ensure adequate state awareness while minimising their impact on the engine system cost and weight; and an end-to-end data processing approach to provide optimised information for the engine maintainers allowing informed decision-making.
Do fisheries and aquaculture production have dominant roles within the economic growth of Pakistan? A long-run and short-run investigation
Authors: Rehman Abdul , Deyuan Zhang , Hena Sehresh , Chandio Abbas Ali 
Published: June 2019

Purpose
The purpose of this paper is to investigate and explore the connection between aquaculture and capture fisheries production and economic growth in Pakistan. Fisheries play an important role in Pakistan’s national economy, and Pakistan has sufficient fishery resources to be developed. Most of the population in the coastal areas depends on fisheries for their livelihood.

Design/methodology/approach
This research was based on time series data of aquaculture and capture fisheries production and the analysis of their relationship with economic growth in Pakistan. The study used an autoregressive distributed lag (ARDL) bounds testing approach to check the dynamic causality between the study variables.

Findings
The results showed that aquaculture and capture fisheries production have had a positive effect on the economic growth in Pakistan.

Practical implications
Better infrastructure for the fishing industry, increased government expenditure on facilities and financial support for the fish farmers could contribute to economic growth in the future. Recommendations for improvements in these areas have been made.

Originality/value
By using an ARDL bounds testing approach, this study contributes to the literature regarding fisheries production and economic growth in Pakistan.
A velocity corrected unresolved CFD-DEM coupled method to reproduce wake effects at moderate Reynolds number
Authors: Wang Zekun , Walayat Khuram , Liu Moubin 
Published: June 2019

Purpose
The purpose of this paper is to develop a corrected unresolved CFD-DEM method that can reproduce the wake effects in modeling particulate flows at moderate Reynolds number.

Design/methodology/approach
First, the velocity field in the wake behind a settling particle is numerically investigated by a resolved method, in which the finite volume method (FVM) is applied to model the fluid flow, discrete element method (DEM) is applied to simulate the motion of particles and immersed boundary method (IBM) is used to tackle fluid solid interaction. Second, an analytical scaling law is given, which can effectively describe the velocity field in the wake behind the settling particle at low and middle Reynolds numbers. Third, this analytical expression is incorporated into unresolved modeling to correct the relative velocity between the particle and its surrounding fluid and enable the influence of the wake of the particle on its neighboring particles.

Findings
Two numerical examples, the sedimentation of dual particles, a list of particles and even more particles are provided to show the effectiveness of the presented velocity corrected unresolved method (VCUM). It is found that, in both examples simulated with VCUM, the relative positions of the particles changed, and drafting & kissing phenomenon and particle clustering phenomenon were clearly observed.

Practical implications
The developed VCUM can be highly beneficial for modeling industrial particulate flows with DKT and particle clustering phenomena.

Originality/value
VCUM innovatively incorporates the wake effects into unresolved CFD-DEM method. It improves the computational accuracy of conventional unresolved methods with comparable results from resolved modeling, while the computational cost is greatly reduced.
Emerging contractual and legal risks from the application of building information modelling
Authors: Almarri Khalid , Aljarman Moshabab , Boussabaine Halim 
Published: June 2019

Purpose
There has been a mounting interest in building information modelling (BIM) in the construction industry sector worldwide due to its perceived benefits. However, reliance on information technology is associated with risks. The purpose of this paper is to offer a better understanding of the emerging contractual and legal risks, which might influence the successful adoption of BIM, in order to facilitate the successful implementation of BIM in the construction industry.

Design/methodology/approach
The risks used in the study were documented from the literature, and primary data were collected by a questionnaire survey. The analysis of the results was driven by univariate and inferential statistics (Analysis of Variance) to identify the emerging contractual and legal risks.

Findings
The findings showed that there were little significant differences in the mean rating of the occurrence of contractual and legal risks between the respondents. The study confirmed that emerging risks are likely to be related to BIM documentations, intellectual rights and liability, missing data and misplaced assumptions among project stakeholders. The results showed that BIM success depends on close collaboration, at the outset of the project, with the client, designers, contractors and consultants.

Practical implications
The findings suggest that contract documents and contract agreements may need to be created in accordance with the identified risks, so that the questions of contractual and legal responsibilities are appropriately defined and allocated among the participants.

Originality/value
Important legal and contractual risks have been identified in the application of BIM. It renders a new understanding of the risks that might influence the successful adoption of BIM.
Liminal leadership: leading betwixt and between
Authors: Shaw-VanBuskirk Leslie , Lim Doo Hun , Jeong Shin-Hee 
Published: June 2019

Purpose
The purpose of this study is to review the literature on liminal leadership, present a comprehensive perspective of it compared to other types of leadership, propose a conceptual framework of liminal leadership and provide a case on how liminal leadership addresses modern workplace issues in the ever-changing and competitive global environment.

Design/methodology/approach
This research is conceptual in nature. For this, the authors searched literature on organizational and leadership theories of liminality within organizational settings and analyzed various leadership perspectives to develop a construct of liminal leadership.

Findings
The comparative analysis revealed different and/or similar characteristics of liminal leadership with other types of leadership theories. On the basis of the comparative analysis, a synthesis of liminal leadership and a proposed conceptual framework to pursue future studies of liminal leadership are provided.

Research limitations/implications
First, the notion of liminal leadership is emerging; few have been conducted to investigate the concept. Therefore, the authors’ approach to compose the theoretical background of liminal leadership is limited. Second, they drew a logical framework of leadership components a liminal leader might use from chosen leadership theories which had some kinship and likeness to liminal leadership. However, the comparative analysis of the relationship is limited because of the conceptually based nature of analysis. Third, the proposed model of liminal leadership is tentative and conceptual in nature. Empirical studies are needed to verify the psychometric structure and reliability of the model.

Originality/value
Despite its importance and a sense of urgency, almost no discussion on liminal leadership or liminality can be found in the field of HRD. The limited knowledge associated with liminal leadership places high value on the results of this study. This paper will provide a seminal base that may stimulate future human resource development (HRD) scholars. The purpose for this study is to contribute a conceptualization of liminal leadership as it applies to the field of HRD as leading and facilitating organizational changes.
The benefits and challenges of sustainable buildings in Prishtina, Kosovo
Authors: Hoxha Visar , Shala Fjolla 
Published: June 2019

Purpose
The purpose of this paper is to study the benefits of construction of sustainable buildings and highlight the challenges of achieving sustainable buildings in Kosovo. The present paper not only focuses on social, economic and environmental benefits of the sustainable buildings viewed from the perspective of construction industry experts but also on the challenges that the construction industry in Kosovo faces in achieving sustainable buildings.

Design/methodology/approach
The present study uses a qualitative research method and semi-structured interviews as a research instrument. The present study interviews around 20 experts of real estate management, architecture, civil engineering and sustainability.

Findings
The present research finds that the citizens of Kosovo are not very well informed about the benefits of sustainable buildings due to lack of adequate promotion of such buildings. The present study finds that sustainable buildings from the view of construction professionals in Prishtina, Kosovo, have economic, social, and environmental benefits mainly in the form of energy savings, lower operational costs, reduction of pollution and CO2 emissions and better health and satisfaction of occupants. The challenges are mainly of economic, structural and organizational and regulatory character.

Research limitations/implications
The present study has great implications for the society and construction industry because it shows to the investors all the benefits of building and using sustainable buildings. The findings of the present study, to a certain extent, fill the gap of lack of information that the construction industry in Kosovo faces regarding the benefits and challenges of sustainable buildings. The construction industry, buyers and authorities can benefit from the present study since they can understand the benefits and challenges of sustainable buildings, which can encourage them to invest more in sustainable buildings.

Originality/value
The study is the first qualitative study about the perception of construction professionals in Prishtina, Kosovo, regarding the benefits and challenges of sustainable buildings.
Is timeshare good for firm value and profitability? Evidence from segment reporting
Authors: Penela Daniela Cristina dos Anjos , Morais Ana Isabel , Gregory Amy M. 
Published: June 2019

Purpose
This study aims to take advantage of segment reporting to provide empirical evidence on the impacts of increasing the share of revenue generated from the timeshare segment in companies’ portfolios for firm value and profitability.

Design/methodology/approach
This paper examines data from five publicity traded hospitality companies that have a timeshare component and carries out different regression analysis using 69 observations ranging from 1998 to 2016.

Findings
The findings support the idea of an inverted U-shaped relationship between the degree of timeshare business (DOT) and firm value and profitability. However, for positive values of DOT, an increase of DOT consistently has a negative impact on firm value and accounting profitability.

Research limitations/implications
This study adds to previous findings through the addition of new variables and contemporary accounting practices. Though sufficient for the analyses conducted, the limited number of observations raises generalizability issues. Further research with larger data sets is advised.

Practical implications
This study implies that timeshare may continue to grow, but not as a segment in the lodging sector; rather as an industry mainly composed of timeshare-dedicated companies. As firms consider diversification or consolidation, this study may inform decisions related to potential firm value.

Originality/value
This study provides evidence to support previous literature related to spin-off activity in the lodging sector. Perhaps more importantly, this study adds value to research on firm value and profitability by extending traditional models and by developing a new “degree of business” variable using segment reporting.
Personality determinants of consumption of premium seats in sports stadiums
Authors: Chang Yonghwan , Ko Yong Jae , Jang Wonseok (Eric) 
Published: June 2019

Purpose
The current study aims to develop a comprehensive hierarchical model of traits and needs to provide a theoretical understanding of personality determinants of luxury-services consumption.

Design/methodology/approach
The sample comprised 415 single-event buyers of premium seats in sports stadiums. The causal relationships of hierarchically ordered four traits – elemental, compound, situational and surface – were examined.

Findings
Extraversion was found to be an important trait for needs for material resources and status, while conscientiousness and openness were important predictors of need for arousal. Furthermore, needs for material resources, status and uniqueness were found to be important for self-value consciousness. Self-value consciousness was found to be an important predictor of purchase intention.

Originality/value
The study integrates fragmented luxury services research on individual differences. The findings about the personality determinants would provide relatively consistent predictions behind luxury-services consumption potentially applicable to diverse luxury markets.
Becoming a competent teacher in education for sustainable development
Authors: Brandt Jan-Ole , Bürgener Lina , Barth Matthias , Redman Aaron 
Published: June 2019

PurposeThis paper aims to provide a holistic approach to assessing student teachers’ competence development in education for sustainable development (ESD). This is to provide evidence on which teaching and learning formats help to foster which aspects of ESD-specific professional action competence in teachers. The studied competencies consist of content knowledge (CK), pedagogical content knowledge (PCK) and the willingness to actively support and implement ESD.Design/methodology/approachA multiple case study design was used on two sequential modules of a university’s teacher education program. A mixed-methods approach was applied that combined surveys, videotaped and PhotoVoice-supported focus groups, as well as pre- and post-assessment tools. Qualitative data analysis was based on the coding paradigm of the qualitative content analysis, whereas quantitative data were interpreted by means of descriptive statistics and paired samplet-tests.FindingsThe results from this study clearly indicate that the two courses contributed to a shift in students’ non-cognitive dispositions. The study also provides evidence on the students’ competence development and demonstrates how two different learning settings support different dimensions of teachers’ professional action competence in terms of ESD.Originality/valueThe triangulation of data enabled not only a mere competence assessment but also deeper insights into learning processes, as well as into the drivers of and barriers to competence development. Furthermore, the study introduces an innovative approach to assessing the development of PCK.
The arithmetic complexity of online grocery shopping: the moderating role of product pictures
Authors: Desrochers Camille , Léger Pierre-Majorique , Fredette Marc , Mirhoseini Seyedmohammadmahdi , Sénécal Sylvain 
Published: June 2019

PurposeOnline grocery shopping possesses characteristics that can make it more difficult than regular online shopping. There are numerous buying decisions to make each shopping session, there are large ranges of product types to choose from and there is varied arithmetical complexity. The purpose of this paper is to examine how such characteristics influence the attitude of consumers toward online grocery shopping websites.Design/methodology/approachThe authors hypothesized that the product type (search or experience product), the task arithmetic complexity, and the attention and cognitive load associated with browsing through product pictures have an effect on the attitude of online shoppers toward these websites. To test the hypotheses, 31 subjects participated in a within-subject laboratory experiment.FindingsThe results suggest that visual attention to product pictures has a positive effect on the attitude of online shoppers toward a website when they are shopping for experience goods, but that it has a negative effect on their attitude toward a website when the task arithmetic complexity is greater. They also suggest that the cognitive load associated with browsing through product pictures has a negative effect on the attitude of online shoppers toward a website when they are shopping for experience goods, and that greater cognitive load variation has a positive effect on their attitude toward a website when arithmetic task complexity is greater.Practical implicationsWhen designing online grocery websites, providing clear single unit quantities with pictures corresponding to the sales unit could help establish a clear baseline on which consumers can work out their quantity requirements. For decisions involving experience goods, product pictures may act as an important complementary information source and may even be more diagnostic than text description.Originality/valueResults reinforce the relevance of enriching the study of self-reported measures of the user experience on e-commerce sites with automatic measures.
Optimal eco-labeling strategy with imperfectly informed consumers
Authors: Fan Tijun , Song Yang , Cao Huan , Xia Haiyang 
Published: June 2019

Purpose
The purpose of this paper is to find the optimal environmental quality criteria for a strategic eco-labeling authority with three objectives (i.e. maximizing the aggregate environmental quality, maximizing the industry profit and maximizing the social welfare). Particularly, the authors investigate how the existence of imperfectly informed consumers affects labeling criteria determination and competition among firms.

Design/methodology/approach
A game-theoretic modeling approach was adopted in this paper. A three-stage sequential game was modeled and backward induction was used to solve for a subgame perfect Nash equilibrium. To investigate the impacts of the existence of imperfectly informed consumers, the equilibrium, if all consumers are perfectly informed of the eco-label, was studied as a benchmark.

Findings
A more strict eco-labeling criterion improves revenues for both the labeled and unlabeled firms. It is interesting to find that the eco-labeling criteria to maximize industry profits are stricter than the criteria to maximize social welfare. Moreover, when the fraction of imperfectly informed consumers increases, the eco-labeling criteria to maximize aggregate environmental quality or industry profits will be more strict, while the criteria to maximize the social welfare will be looser.

Originality/value
The authors analyze the equilibrium strategies for firms against the eco-labeling criteria certified by authority with different objectives. The obtained optimal labeling strategies could provide insightful guidelines for the certifying authority to select the best suitable labeling criteria to achieve its goals.
What makes the difference? Employee social media brand engagement
Authors: Duncan Sherese Y. , Chohan Raeesah , Ferreira João José 
Published: June 2019

Purpose
This paper aims to explore, using the employee lens of business-to-business firms, word use through brand engagement and social media interaction to understand the difference between employees who rate their employer brands highly on social media and those who don't.

Design/methodology/approach
We conducted a textual content analysis of posts published on the social media job evaluation site glassdoor.com. LIWC software package was used to analyze 30 of the top 200 business-to-business brands listed on Brandwatch using four variables, namely, analytical thinking, clout, authenticity and emotional tone.

Findings
The results show that employees who rate their employer’s brand low use significantly more words, are significantly less analytic and write with significantly more clout because they focus more on others than themselves. Employees who rate their employer’s brand highly, write with significantly more authenticity, exhibit a significantly higher tone and display far more positive emotions in their reviews.

Practical implications
Brand managers should treat social media data disseminated by individual stakeholders, like the variables used in this study (tone, word count, frequency), as a valuable tool for brand insight on their industry, competition and their own brand equity, now and especially over time.

Originality/value
This study provides acknowledgement that social media is a significant source of marketing intelligence that may improve brand equity by better understanding and managing brand engagement.