bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparing the corrosion protection performance of graphene nanosheets and graphene quantum dots as nanofiller in epoxy coatings
Authors: Pourhashem Sepideh , Rashidi Alimorad , Vaezi Mohammad Reza 
Published: August 2019

Purpose
In this research, the effect of graphene nanosheets and graphene quantum dots (GQDs) as carbon-based nanofillers on corrosion protection performance of epoxy coatings is considered.

Design/methodology/approach
Graphene nanosheets are synthesized via chemical vapor deposition method, and GQDs are synthesized by a simple and gram scale procedure from carbon black. The prepared nanofillers are characterized by X-ray diffraction technique, Fourier transform infrared spectroscopy and transmission electron microscopy. Further, solvent-based epoxy coatings containing 0.1 Wt.% graphene nanosheets and GQDs are prepared, and the corrosion resistance of nanocomposite coatings is considered by electrochemical impedance spectroscopy.

Findings
The results indicate that both epoxy/graphene nanosheets and epoxy/GQDs samples have significantly higher corrosion resistance than pure epoxy coating. Meanwhile, GQDs can more effectively enhance the corrosion protection performance of epoxy coatings compared to graphene sheets, which can be attributed to the presence of functional groups on GQDs and improving the dispersion quality in polymer matrice.

Originality/value
In this research, for the first time, the graphene quantum dots (GQDs) prepared by a “top-down” method from carbon black are used as nanofiller in epoxy coatings, and the potential application of graphene nanosheets and GQDs as anti-corrosion nanofiller in epoxy coatings is investigated.
Analysis of oxide wear debris using ferrography image segmentation
Authors: Peng Peng , Wang Jiugen 
Published: August 2019

Purpose
It is a challenging task to analysis oxide wear particles when they are stuck together with other types of wear particles in complex ferrography images. Hence, this paper aims to propose a method of ferrography image segmentation to analysis oxide wear debris in complex ferrography images.

Design/methodology/approach
First, ferrography images are segmented with watershed transform. Then, two region merging rules are proposed to improve the initial segmentation results. Finally, the features of each particle are extracted to detect and assess the oxide wear particles.

Findings
The results show that the proposed method outperforms other methods of ferrography image segmentation, and the overlapping wear particles in complex ferrography images can be well separated. Moreover, the features of each separated wear particles can be easily extracted to analysis the oxide wear particles.

Practical implications
The proposed method provides a useful approach for the automatic detection and assessment of oxide wear particles in complex ferrography images.

Originality/value
The colours, edges and position information of wear debris are considered in the proposed method to improve the segmentation result. Moreover, the proposed method can not only detect oxide wear particles in ferrography images but also evaluate oxide wear severity in ferrography images.
Engaging with TV events on Twitter
Authors: Segijn Claire Monique , Maslowska Ewa , Araujo Theo , Viswanathan Vijay 
Published: August 2019

Purpose
The purpose of this paper is to explore the interrelationship between television (TV) consumption (viewing ratings), engagement behaviors of different actors on Twitter (TV programs, media, celebrities and viewers) and the content of engagement behaviors (affective, program-related and social content).

Design/methodology/approach
TV ratings and Twitter data were obtained. The content of tweets was analyzed by means of a sentiment analysis. A vector auto regression model was used to understand the interrelationship between tweets of different actors and TV consumption.

Findings
First, the results showed a negative interrelationship between TV viewing and viewers’ tweeting behavior. Second, tweets by celebrities and media exhibited similar patterns and were both affected mostly by the number of tweets by viewers. Finally, the content of tweets matters. Affective tweets positively relate to TV viewing, and program-related and social content positively relates to the number of tweets by viewers.

Research limitations/implications
The findings help us understand the online engagement ecosystem and provide insights into drivers of TV consumption and online engagement of different actors.

Practical implications
The results indicate that content producers may want to focus on stimulating affective conversations on Twitter to trigger more online and offline engagement. The results also call for rethinking the meaning of TV metrics.

Originality/value
While some studies have explored viewer interactions on Twitter, only a few studies have looked at the effects of such interactions on variables outside of social media, such as TV consumption. Moreover, the authors study the interrelations between Twitter interactions with TV consumption, which allows us to examine the effect of online engagement on offline behaviors and vice versa. Finally, the authors take different actors into account when studying real-life online engagement.
A coupled and indirectly self-adaptive under-actuated hand with double-linkage-slider mechanism
Authors: Liu Siyun , Zhang Wenzeng , Sun Jie 
Published: August 2019

Purpose
Underactuated fingers are adapted to generate several grasping modes for different tasks, and coupled fingers and self-adaptive fingers are two important types of them. Aiming to expand the application and increase adaptability of robotic hand, this paper aims to propose a novel grasping model, called coupled and indirectly self-adaptive (CISA) grasping model, which is the combination of coupled finger and indirectly self-adaptive finger.

Design/methodology/approach
CISA grasping process includes two stages: first, coupled and then indirectly self-adaptive grasping; thus, it is not only integrated with the good pinching ability of coupled finger but also characterized with the high flexibility of indirectly self-adaptive finger. Furthermore, a CISA hand with linkage-slider, called CISA-LS hand, is designed based on the CISA grasping model, consisting of 1 palm, 5 CISA-LS fingers and 14 degrees of freedom.

Findings
To research the grasping behavior of CISA-LS hand, kinematic analysis, dynamic analysis and force analysis of 2-joint CISA-LS finger are performed. Results of grasping experiments for different objects demonstrate the high reliability and stability of CISA-LS hand.

Originality/value
CISA fingers integrate two grasping modes, coupled grasping and indirectly self-adaptive grasping, into one finger. And a double-linkage-slider mechanism is designed as the switch device.
Missing entrepreneurs
Authors: Aleksandrova Ekaterina , Gerry Christopher J. , Verkhovskaya Olga 
Published: August 2019

PurposeCompared with other emerging and former command economies, Russia has low levels of entrepreneurial activity and exceptionally low levels of reported entrepreneurial intentions. Drawing on the theory of planned behaviour (TPB), this paper aims to examine the determinants of entrepreneurial intentions in Russia.Design/methodology/approachUsing individual level data from two waves (2013 and 2018) of the Global Entrepreneurship Monitor (GEM) survey, the paper presents a range of semi-nonparametric logistic regressions estimating the determinants of reported entrepreneurial intention among the Russian adult population not already engaged in entrepreneurial activity. These data allow for the first empirical exploration of the TPB in the Russian context.FindingsThe results provide evidence in support of two (“attitudes” and “perceived behavioural control”), from three, origins of the theory of planned behaviour. Firstly, positive attitudes towards entrepreneurship, in the form of employment seeking and direct (own experience) or indirect (experience through social networks) entrepreneurial knowledge are both positively associated with intention. Secondly, individuals who consider their environment to be conducive to entrepreneurship and who believe they have the knowledge and skills required to be entrepreneurs are more likely to intend entrepreneurial action.Originality/valueIn view of the limited entrepreneurial activity and low levels of reported entrepreneurial intention in Russia, it is important to understand the drivers of these intentions if the appropriate policy responses are to be identified and adopted. This research represents the first substantive efforts to comprehensively examine the determinants of entrepreneurial intentions for Russia and allows us to propose several policy relevant conclusions.
Spatial analysis of Twitter sentiment and district-level housing prices
Authors: Hannum Christopher , Arslanli Kerem Yavuz , Kalay Ali Furkan 
Published: August 2019

Purpose
Studies have shown a correlation and predictive impact of sentiment on asset prices, including Twitter sentiment on markets and individual stocks. This paper aims to determine whether there exists such a correlation between Twitter sentiment and property prices.

Design/methodology/approach
The authors construct district-level sentiment indices for every district of Istanbul using a dictionary-based polarity scoring method applied to a data set of 1.7 million original tweets that mention one or more of those districts. The authors apply a spatial lag model to estimate the relationship between Twitter sentiment regarding a district and housing prices or housing price appreciation in that district.

Findings
The findings indicate a significant but negative correlation between Twitter sentiment and property prices and price appreciation. However, the percentage of check-in tweets is found to be positively correlated with prices and price appreciation.

Research limitations/implications
The analysis is cross-sectional, and therefore, unable to answer the question of whether Twitter can Granger-cause changes in housing markets. Future research should focus on creation of a property-focused lexicon and panel analysis over a longer time horizon.

Practical implications
The findings suggest a role for Twitter-derived sentiment in predictive models for local variation in property prices as it can be observed in real time.

Originality/value
This is the first study to analyze the link between sentiment measures derived from Twitter, rather than surveys or news media, on property prices.
Nudging physical activity in offices
Authors: Van der Meiden Iris , Kok Herman , Van der Velde Gerben 
Published: August 2019

Purpose
This paper aims to investigate whether and why nudging interventions in an office environment are effective to stimulate stair use of employees.

Design/methodology/approach
This paper is based on a pre-test/post-test case study design at the headquarters of a Dutch online retailer. Observations were conducted to test the impact of two nudge interventions, being footprints and posters, on employees’ stair use in two consecutive pre-test/post-test weeks. An online survey questionnaire was used to assess employees’ overall experience with the nudging interventions after the fifth and again neutral week.

Findings
A total of 14,357 observations were recorded during five weeks. This research shows that footprints as nudging intervention significantly increase stair use of employees, and after removal, significantly decrease stair use again. Moreover, footprints were more effective than posters, of which the latter did not impact stair use significantly. Results from the survey questionnaire, completed by 46.2 per cent of the employees, showed that, in terms of degree of perception, footprints (91.4 per cent) were more noticeable than posters (46.3 per cent).

Originality/value
This paper contributes to the non-conclusive research regarding the effectiveness of nudging interventions on stair use in office environments. It clearly shows that perceptibility in combination with a positive attitude towards the nudge leads to a higher degree of initial behavioural change, yet not to a change of mind.
An evaluation of property tax base in Nairobi city
Authors: Nyabwengi Lucy M. , K’Akumu Owiti A 
Published: August 2019

Purpose
This study aims to evaluate the property tax base under the local government property taxation in Nairobi City and its implication on revenue adequacy of the city. Nairobi has grown both in population and in physical extent resulting to increased demand for urban services. The city faces challenges of adequate infrastructure service provision against increasing demand. Property taxation if fully exploited can be a major source of city government revenue, which has been dwindling.

Design/methodology/approach
Literature review of property tax bases in the world and examination of best practices was done to highlight the inadequacies of property tax base administration in Nairobi. Primary data were gathered through interviews of officers in Nairobi City involved in the land rating process. Secondary data were obtained through documentary search and field survey of the study area.

Findings
The study established that Nairobi relies on a dual system of taxation, namely, site value rating and area rating. Tax is on vacant land only and excludes improvements. There are many legal exemptions and administrative exclusions from the tax base. The property tax registers do not include all the taxable properties and there is no regular updating of the tax registers. Nairobi relies on an outdated valuation roll whose values have no relation to the current market values.

Research limitations/implications
These factors have resulted to a narrow tax base, which affects the revenue potential of the city and its ability to adequately provide infrastructure services.

Originality/value
This is an original research, which relied mainly on primary data. To establish the property tax bases and the exempt properties in Nairobi, the researchers interviewed the officers at the Nairobi city land valuation and property management directorate using structured questionnaires. To address the third objective on whether the property tax base is complete and all-inclusive, the research relied on primary data. The research population was residential properties in Buruburu, Kilimani and Riruta areas of Nairobi city. The sample data on property details were collected from the Ministry of Land and Physical Planning (MLPP). The researchers then examined the records at the Nairobi City to evaluate whether the properties, which are registered at the MLPP, are charged land rates at the city level and at what amounts. This included properties under site value rating and area rating.
Preferred leadership styles by gender
Authors: Miranda Sophia Raquel 
Published: August 2019

PurposeThe purpose of this paper is to determine to what extent there were gender differences in leadership styles shown by leaders in mental health organizations (MHOs) in North Carolina, as expressed through transformational, transactional and laissez-faire leadership attributes.Design/methodology/approachThe author used a quantitative, causal-comparative analysis to test the hypothesis.FindingsA series oft-tests were conducted to determine if significant differences existed between genders and leadership attributes of MHO leaders. The results revealed no significant gender differences in leadership styles of MHO leaders.Research limitations/implicationsOne implication was the convenience nature of this sample affected the internal validity of this study, since these findings may not accurately reflect the leadership styles in the target population. The second implication is the sample size’s effect on the external validity, as the results cannot be extrapolated from a nonrandom sample to the target population. The consequence of using a smaller then necessary convenience sample is decreased analytical power or ability to identify small-size effects of gender that in a larger sample might have been statistically significant.Originality/valueDue to the scarcity of studies regarding gender differences in leadership styles in MHOs, this study examined this area to fill the gap in the research field.
No children, no DSS, no students: online adverts and “property guardianship”
Authors: Meers Jed , Hunter Caroline 
Published: August 2019

PurposeThose seeking a new place to live – especially in the private rented sector – now head online to do so. The platforms they use and adverts they see are an important source of information about the properties they will occupy and how their owners’ seek to project them. This paper aims to argue for the importance of property adverts as a source of data, using “property guardianship” to illustrate the value in the approach.Design/methodology/approachThe study draws on an analysis of 503 advertisements published on SpareRoom.co.uk – a leading property search engine – in July 2018.FindingsThe authors put forward four key areas of findings. The first two look at legal understanding, dealing with the context, the advertisement provides for eventual occupation (the “process of construction”) and any indications they provide of legal elements of occupation (“diagnostics”). The final two deal with the broader positioning of the sector, analysing the practice of excluding prospective occupiers, such as the widespread inclusion of “no Department of Social Security” seen elsewhere in the private rented sector, and how the adverts project a certain lifestyle to their viewer.Research limitations/implicationsThe findings demonstrate that further research into property advertisements would be valuable, particularly into other sub-markets in the private-rented sector, such as student accommodation and “professional” lets.Originality/valueThis study is the only analysis of property guardian advertisements and the first dedicated study of private rented sector advertisements in the UK.
Historic buildings and the creation of experiencescapes: looking to the past for future success
Authors: Tresidder Richard , Deakin Emmie Louise 
Published: August 2019

Purpose
The purpose of this paper is to identify the role that the creative re-use of historic buildings can play in the future development of the experiences economy. The aesthetic attributes and the imbued historic connotation associated with the building help create unique and extraordinary “experiencescapes” within the contemporary tourism and hospitality industries.

Design/methodology/approach
This paper provides a conceptual insight into the creative re-use of historic buildings in the tourism and hospitality sectors, the work draws on two examples of re-use in the UK.

Findings
This work demonstrates how the creative re-use of historic buildings can help create experiences that are differentiated from the mainstream hospitality experiences. It also identifies that it adds an addition unquantifiable element that enables the shift to take place from servicescape to experiencescape.

Originality/value
There has been an ongoing debate as to the significance of heritage in hospitality and tourism. However, this paper provides an insight into how the practical re-use of buildings can help companies both benefit from and contribute to the experiences economy.
Dietary patterns and nutrients associated with metabolic syndrome
Authors: Tayyem Reema , Al-Qawasmeh Rawan , Khawaja Nahla 
Published: August 2019

PurposeThis paper aims to evaluate macro- and micronutrient intake among Jordanian adults who have metabolic syndrome (MetS) and those MetS-free.Design/methodology/approachA total of 154 Jordanian adults aged 20-55 years were enrolled from The National Center for Diabetes, Endocrinology and Genetics in this case control study. In total, 77 newly diagnosed cases of MetS and 77 controls were recruited and matched by age and sex. Dietary data were collected by face-to-face interview using a validated food frequency questionnaire.FindingsAfter adjustment of the energy intake and macronutrients, the cases reported significantly higher intake of the amount of protein (p < 0.001), carbohydrates (p < 0.001), fiber (p < 0.001), sugar (p < 0.001), fat (p < 0.001), saturated fat (p < 0.001), monounsaturated (p < 0.001), polyunsaturated (p < 0.001), trans-fat (p < 0.029), omega-3 (p < 0.001) and omega-6 (p < 0.001) as compared to the controls. The results also showed that the intake of some micronutrients was significantly higher among cases when compared to the controls. In this study, three dietary patterns have been itemized; “fast food dietary pattern”, “Mediterranean dietary pattern” and “high-protein dietary pattern”. Only a direct significant trend between MetS and fast food pattern was detected (p-trend = 0.001). Neither significant associations nor trends were detected in the Mediterranean and high-protein patterns with MetS risk.Originality/valueThe study findings highlighted the presence of associations between fast food dietary pattern, total energy and some macro- and micronutrients intake and the risk of MetS among population living in the Middle East. Even though the findings of this study bridge the gap between theory and practice, a large scale population-based study is warranted to confirm these findings.
Bridge employment and full retirement intentions: the role of person-environment fit
Authors: Lahlouh Khaled , Lacaze Delphine , Huaman-Ramirez Richard 
Published: August 2019

PurposeThe purpose of this paper is to explore the relationship between different categories of person–environment (P–E) fit and two types of retirement intentions (i.e. full retirement and bridge employment).Design/methodology/approachData were collected from a convenience sample of 357 executives aged 50 and over, employed in French private sector companies. Hypotheses were tested using structural equation modeling.FindingsPerceptions of value congruence at vocational level and needs and supplies fit at organizational and job levels were positively related to the intention to hold bridge employment after retirement. The fit between older worker’s abilities and job demands was positively related to the two types of retirement intentions.Originality/valueThe complexity of retirement transition is taken into account with the introduction of two types of retirement intentions. P–E fit is shown to be an antecedent of career intentions after retirement.